Durco Manual

7/17/2019 Durco Manual

http://slidepdf.com/reader/full/durco-manual 1/352

Experience In Motion

MARK 3ANSI CHEMICAL PROCESS PUMPProduct Reference Manual

FPD-1073a



11/08 Mark 3 ANSI Chemical Process Pump

Pumps

Mark 3 Index

FPD-1073a

Index Section

Product Summary and Description ................................................ 1

Standard and Optional Construction ..............................................2

Pump Features and Benefits .......................................................... 3

Product Brochure ........................................................................... 4

Product Presentation ..................................................................... 5

Pump Cross Sectional Drawings ................................................... 6

General Arrangement Drawings ..................................................... 7

Engineering Data ............................................................................ 8

Standard Lead Times .....................................................................9

Typical Specifications................................................................... 10

Typical Applications ..................................................................... 11

Representative Installation Lists .................................................. 12

Competitive Analysis .................................................................... 13

Coverage Charts........................................................................... 14

Pump Selection Program Guidelines ........................................... 15

Drivers, Mechanical Seals and Accessory Information ................ 16

Optional and Alternative Configurations....................................... 17

Aftermarket and Recommended Spare Parts ............................... 18

FAQs (Frequently Asked Questions) ............................................. 19

Typical Instruction Manual ........................................................... 20

Submittal Documentation (Software)........................................... 21

Testing Capabilities ...................................................................... 22

Pricing for Pumps, Parts and Accessories................................... 23

Terms and Conditions .................................................................. 24

Mark 3ANSI Chemical Process Pump

Property of Flowserve PRIVATE AND CONFIDENTIAL



11/08 ii Mark 3 ANSI Chemical Process Pump

Pumps

Mark 3 Index

This page intentionally blank

Property of Flowserve PRIVATE AND CONFIDENTIAL



Pumps

Mark 3 Summary and Description

11/08 1-1Property of Flowserve PRIVATE AND CONFIDENTIAL

Mark 3 ANSI Chemical Process Pump

Product Summary and Description

Model: Flowserve Durco Mark 3Type: Single stage, horizontal, overhung, end suction, centerlinedischarge, back pull-out, fully compliant with ASME B73.1-2001

Lead design center: Dayton GTCLead manufacturing center: ChesapeakeSecondary manufacturing center: Newark

General Description

The Flowserve Durco Mark 3 is recognized worldwide as thepremier name in ANSI chemical process pumps. The advanceddesign and precision manufacture results in a rugged, heavy-dutypump that will provide reliable, dependable performance in themost demanding services. Below are some of the highlights of theMark 3 pumps. The Mark 3 bulletin, contained in Section 4, shouldbe carefully studied for details.

Available Sizes and Range of Service

The Mark 3 line covers a broad hydraulic range:Sizes - 30•

Group 1 - 7–Group 2 - 16–Group 3 - 7–

Capacities•

60 Hz to 1680 m– 3 /h (7400 gpm)50 Hz to 1390 m– 3 /h (6120 gpm)

Heads•

60 Hz to 300 m (985 ft)–50 Hz to 200 m (655 ft)–

ApplicationsMark 3 pumps find use in applications ranging from water to themost corrosive chemicals.

Construction Features

There is a very high degree of interchangeability in the Mark 3family. The 30 sizes that comprise the family are built with onlythree different power frames. The charts at right summarize theinterchangeability.

Mark 3 Standard Group 1

P O W E R E N D

R E A R

R E V E R S E

V A

N E

OR

F R

O N T V A N E

O P E N S T Y L E

I M

P E L L E R S

C A S I N G S

11/2X1LF-4

11/2X1-6

3X11/2-6

3X2-6

11/2X1LF-8

11/2X1-8

3X11/2-8


P O W E R E N D

A D A P T E R S

R E A R C O V

E R S

R E V E R S E

V A N E

I M P E L L E R

S

OR

F R O N T V A

N E

O P E N S T Y

L E

I M P E L L E R

S

C A S I N G S

8X6-14A

10X8-14

6X4-16

8X6-16A

10X8-16

10X8-16H

10X8-17


P O W E R E N D

A D A P T E R S

R E A R C O V E R S

R E V E R S E V A N E

I M P E L L E R S

OR

F R O N T V A N E

O P E N S T Y L E

I M P E L L E R S

C A S I N G S

3X2-8

4X3-8

2X1LF-10

2X1-10A

3X11/2-10A

3X2-10A

4X3-10

4X3-10H

6X4-106X4-10H

3X11/2LF-13

3X11/2-13

3X2-13

4X3-13

4X3-13HH

6X4-13A



Pumps

Mark 3 Summary and Description

11/08 1-2 Property of Flowserve PRIVATE AND CONFIDENTIAL







Pumps

Mark 3 Standard and Optional Construction

Standard and Optional Construction

Configurations

In addition to the ANSI standard pump configurations, the Mark 3is available with specialty wet ends for specific applications.These include:

Mark 3 Sealmatic• – dynamically sealed pump that eliminatesthe need for conventional mechanical seals

Mark 3 Unitized Self-Priming• – used for pumping from sumpsor liquid sources located below the pump centerline

Mark 3 Recessed Impeller• – used to pump liquids that contain

large solids or stringy/fibrous materialsMark 3 In-Line• – pump suction and discharge located on thesame centerline, pump oriented in vertical position

Mark 3 GRP• – solid polymer wet end for pumping highlycorrosive liquids

PolyChem S• – fluoropolymer lined pump that uses conventionalmechanical seals

Guardian Magnetic Drive• – used where no process leakagecan be tolerated

PolyChem M• – magnetic drive fluoropolymer lined pump

Designation Symbol ACI Designation Equivalent WroughtDesignation ASTMSpecifications*

Ductile Iron DCI None None A395Carbon Steel DS None Carbon Steel A216, Gr. WCB

CF-8M D4 CF8M 316 A744, Gr. CF-8M

Durcomet 100 CD4M CD4MCuN Ferralium® 255 A995, Gr. 1B

Durimet 20 D20 CN7M Alloy 20 A744, Gr. CN-7M

Durcomet 5 DV None None None

CY-40 DINC CY40 Inconel® 600 A494, Gr. CY-40

M-35 DM M351 Monel® 400 A494, Gr. M-35-1

Nickel DNI CZ100 Nickel 200 A494, Gr. CZ-100

Chlorimet 2 DC2 N7M Hastelloy® B-2 A494, Gr. N-7M

Chlorimet 3 DC3 CW6M Hastelloy® C-276 A494, Gr. CW-6M

Duriron® D None None A518, Gr. 1

Durichlor 51® D51 None None A518, Gr. 2

Superchlor® SD77 None None None

DC-8 DC8 None None None

Titanium Ti None Titanium B367, Gr. C-3

Titanium-Pd Ti-Pd None Titanium-Pd B367, Gr. C-8A

Zirconium Zr None Zirconium B752, Gr. 702C

*Alloys conform to the chemical and mechanical requirements of the latest edition of the ASTM specification.

® Durion, Durichlor 51 and Superchlor are registered trademarks of Flowserve Corporation.® Ferralium is a registered trademark of Langley Alloys.

® Hastelloy is a registered trademark of Haynes International, Inc.® Inconel and Monel are registered trademarks of International Nickel Co. Inc.

Sources of Information

There are three primary sources of information for the Mark 3pump line. These sources are available online at the Flowserveregistered user literature site. For convenience, links to thesepublications are provided below.

Mark 3 Product Bulletin, PS-10-13•

Mark 3 Technical Bulletin, P-10-501•

Mark 3 User Instructions:•

Installation, Operation, Maintenance, 71569102

These sources will be referenced frequently in this manual.

http://www.fpdlit.com/pdf/p-10-501-e.pdf

http://www.flowserve.com/vgnfiles/Files/Literature/ProductLiterature/Pumps/71569102-ea4.pdf







Pumps

Mark 3 Standard and Optional Construction






Pumps

Mark 3 Pump Features and Benefits

Features and BenefitsThe Mark 3 possesses many unique features and benefits; however,there are three distinct features that differentiate it from other ANSIpumps. These features are the power end designs, the Mark 3reverse vane impeller, and the SealSentry seal chambers. Below is

a brief summary of these features with their corresponding benefits.

Micrometer impeller adjustment

Fast, accurate impeller clearance setting

No need for cumbersome and time consuming use of dial indicators or feeler gauges

Maintains shaft concentricity which improves seal life

Superior to jackscrew design because of accuracy, speed and uniform bearing loads

Shaft design and options

Superior shaft rigidity for improved bearing and mechanical seal life

Broad material options to meet all corrosive applications

No special shafting required for high radial load applications

Wider bearing span

Larger bearing size for Group 2

Friction welded design provides optimum corrosion resistance and strength

Lubrication

Oil bath (standard)•

Regreaseable•

Greased for life•

Oil mist•

Tailor lubrication method to plant standards for long, trouble-free bearing life

Durco ANSI 3A Option

Clean room assembly to prevent bearing housing contamination

VBXX “Vapor Block” bearing isolators that keep lubricant in and contaminants out

Lifetime warranty

Power End Designs

Mark 3 Reverse Vane Impeller

SealSentry Seal Chambers

Low, predictable seal chamber pressure and thrust loadsImproved mechanical seal life

Improved thrust bearing life

Low NPSH requiredMore flexibility in pump selection

More flexibility in system design

Rear cover plate is wear surface Rear cover replacement is much more economical than casing replacement

Repeatable performanceOne setting controls the critical parameters of performance, efficiency, seal

chamber pressure and thrust/axial loads

In-shop impeller adjustment

Takes full advantage of back pullout feature

Impeller and component mechanical seal settings can be made in the shoprather than under adverse field conditions

Five available designs Provides best sealing environment for each specific application

FM technology

Self-venting, self-flushing, self-draining

Extends seal life by purging heat, solids and vapors

Permit use of single seals in many services where dual seals with external flush were required

Can eliminate flush plans for many single seal applications

Extend mechanical seal life





Pumps

Mark 3 Pump Features and Benefits




Durco ®

M ark 3 ™

ANSI Chemical Process Pumps

M ark 3 Standard

Sealmatic

Lo-Flo

Recessed Impel ler

Unitized Self-Primer

Bulletin PS-10-13b (E)

Pumps



Pumps

Pump Supplier To The World

F l o w s e r v e i s t h e

d r i v i n g f o r c e i n t h e

g l o b a l i n d u s t r i a l

p u m p m a r k e t p l a c e .

N o o t h e r p u m p

c o m p a n y i n t h e

w o r l d h a s t h e

d e p t h o r b r e a d t h

o f e x p e r t i s e i n

t h e s u c c e s s f u l

a p p l i c a t i o n o f

p r e - e n g i n e e r e d ,

e n g i n e e r e d a n d

s p e c i a l p u r p o s e

p u m p s a n d

s y s t e m s .

Pumping Solutions

Flowserve is providing pumpingsolutions which permit cus-tomers to continuously improveproductivity, profitability and

pumping system reliability.

Market Focused

Customer Support

Product and industry specialistsdevelop effective proposals andsolutions directed toward marketand customer preferences. They offer technical advice andassistance throughout eachstage of the product life cycle,beginning with the inquiry.

Dynamic Technologies

Flowserve is without peer in thedevelopment and application of pump technology, including:• Hydraulic engineering

• Mechanical design• Materials science• Intelligent pumping• Manufacturing technology

Broad Product Line s

Flowserve offers a wide rangeof complementary pump types,from pre-engineered processpumps, to highly engineeredand special purpose pumpsand systems. Pumps are builtto recognized global standardsand customer specifications.

Pump designs include:• Single stage process• Between bearing

single stage• Between bearing

multistage• Vertical• Submersible motor• Rotary• Reciprocating• Nuclear• Specialty



Pumps

Table of Contents

Ma rk 3 Standard

Pump ............................4-5Performance Curves.......6

Features and

Enhancements

PartsInterchangeability ...........7PROS+............................7Power Ends ....................8Shaft andBearings Design..............9

SealSentry...............10-11Impellers .................12-13Shaft Options................14Pump Parts...................15Alloy Materials..............15Baseplates ...............16-19Options....................20-21Pump PowerMonitor.........................33

Ma rk 3 Lo-Flo

Pump ........................22-23

Mark 3 Sealmatic

Pump ........................24-25

Mark 3 Self-PrimingPump ........................26-27

Ma rk 3 Recessed

Impeller Pump .........28-29

Complementary Pumps

Mark 3 In-Line..............30Non-Metallic Pumps.....31Magnetic DrivePumps ..........................32CPX Family of ISOPumps ..........................34

Engineered Services .....35

3

The Premier Name in ANSI

Chemical Process Pumps The Mark 3 family of ANSIchemical process pumps offersa wide range of configurations

including mechanically sealed,dynamically sealed, low-flow,self-priming and recessedimpeller pumps. The Mark 3family, therefore, providesflexibility and breadth ofpumping solutions in countlessapplications throughout theworldwide process industries.

Applications

• Acid transfer• Brine• Chemical processing• Petrochemical processing

• Corrosive services• Food and beverage

processing• Hydrocarbon processing• Pharmaceuticals• Polymers• Pulp and paper• Sea water• Slurries• Solvents• Steel and primary metals• Water and wastewater

treatment

Complementary Pumps

• CPX ISO chemicalprocess pump

• Mark 3 ANSI in-line chemicalprocess pump

• Mark 3, Group 4 chemicalprocess pump

• Guardian magnetic drivechemical process pump

• PolyChem M-Series ANSIand ISO fluoropolymer lined

magnetic drive pumps• PolyChem S-Series ANSI andISO fluoropolymer linedchemical process pumps

• PolyChem GRP ANSIengineered polymer compositechemical process pump

• FRBH heavy-duty paperstock and process pump

Mark 3 Family of ANSI Chemical Process Pumps

M ark 3 In-Line M ark 3, Group 4



Mark 3 Standard ANSI Chemi cal Process Pump

4

External M icrometer Im peller Adjustment accurately sets impeller clearance in 20 seconds,in the shop or the field

Largest Shaft and Bearing Components in standard ANSI pumps extends bearing life and reduces shaft deflection and vibration

Pumps

World Renowned for

Reliabili ty and Performance The Flowserve Durco Mark 3pump is recognized worldwideas the premier name in ANSI

chemical process pumps.Conforming to ANSI B73.1 andincorporating advanced designfeatures, the rugged Mark 3standard pump providesunmatched performance andreliability.

Operating Parameters

• Flows to 4540 m3/h(29 000 US gpm)

• Heads to 215 m (700 ft)• Pressures to 27 bar (400 psi)

• Temperatures from -73°C(-100°F) to 370°C (700°F)

Unique Reverse Vane Impelle r is the only impeller design that offers repeatable pump performance throughout the life of the pump.Open impellers available

SealSentry™ Seal Chambers feature unique flow modifiersto extend seal life and provide advanced self-flushing capability



Truest Running ANSI Pump

The Mark 3 standard pump isengineered with four precisionmachined metal-to-metal fitlocations – more than any

other manufacturer.• Precision machined metal-to-

metal bearing carrier reducestolerance stack-ups toimprove shaft concentricity

• Superior to jackscrew designswhich can cause cocking

• Extends bearing andmechanical seal life

Reliabili ty and PerformanceEnhancing Fe atures

• Precision investment castreverse vane impeller offerslow, predictable seal chamberpressure and repeatablepump performance

• External micrometer impelleradjustment reduces mainte-nance time and restorespump efficiency

• SealSentry seal chambersextend mechanical seal lifeand improve pump reliability

• Precision metal-to-metal fitsimprove concentricity andextend bearing and seal life

• Choice of corrosion-resistantmaterials prolongs pump life

Pumps

SealSentry family of sealchambers features uniqueflow modifiers (FM)

designed to extendmechanical seal life andincrease pump reliability.• Improves mechanical

seal performance andreliability

• Permits use of lessexpensive seal andflush plan technology

• Improves pumpreliability

• Vaalar Awardwinning design

Choice of Power Ends

• Standard Mark 3Apower end with doublelip oil seals and topvent/breather

• ANSI 3A™ power end(shown on page 8)featuring Inpro VBXXbearing isolators anda lifetime warranty





The 30 pumps in the Mark 3family are built with only threedifferent power frames.

SealSentry provides a choice

of five different seal chamberoptions to best meet yourspecific needs.

Pumps

Mark 3 Interchangeability

PROS+

PROS+proposal and ordersystem is the most comprehen-sive and user friendly pumpselection program in theindustry. This software ensurescorrect sizing and selection of Flowserve pumps to best suit

your process application needs.Pros+is available from yourlocal sales representative oron-line at www.flowserve.com.

Quality System Certificate

MARK III Standard Group II

• • •• •

• • •• •

• • •• • •• • •

• • • • • •• • •• • •• • •

• •• • •• • •

• • • • •• •• • •

P O W E R E N D

R E A R C O

V E R S

A D A P T E R

S


I M P E L L E

R S

F R O N T V A N E

O P E N S T

Y L E

I M P E L L E

R S

C A S I N G S

3X2-8

4X3-8

2X1LF-10

2X1-10A

3X11/2-10A

3X2-10A

4X3-10

4X3-10H

6X4-10

6X4-10H

3X11/2LF-13

3X11/2-13

3X2-13

4X3-13

4X3-13HH

6X4-13A

OR

Ma rk 3 Standard Group 2

• •• • •

• • •• • • • •• •

• • •• • •

P O W E R E N D

R E A R C O V E R S


I M P E L L E R S

F R O N T V A N E

O P E N S T Y L E

I M P E L L E R S

C A S I N G S

11/2X1LF-4

11/2X1-6

3X11/2-6

3X2-6

11/2X1LF-8

11/2X1-8

3X11/2-8

OR

P O W E R E N D

R E A R C O V E R S

A D A P T E R S


I M P E L L E R S

F R O N T V A N E

O P E N S T Y L E

I M P E L L E R S

C A S I N G S

8X6-14A

10X8-14

6X4-16

8X6-16A

10X8-16

10X8-16H

10X8-17

OR

• • •• •

• • •• • •• • •

• • •• • •

• • •• • • •



Pumps delivered worldwideare manufactured in ISO 9001certified Flowserve facilities.



Flowserve offers a choice of power ends: the standard Mark3A or the optional ANSI 3A™(shown below).

Standard Mark 3A Power End• Double row angular contact

outboard/single row, deepgroove inboard bearingsfor excellent axial and radialload support

• External micrometer impelleradjustment

• Double lip oil seals• Top mounted vent and

oil filler• Constant level oiler• Large 25 mm (1 in) diameter

reflective sight glass• Optional magnetic drain plug• Optional oil slinger

Mark 3 Power Ends

8

ANSI 3A Power End

The ANSI 3A power end is soadvanced it carries a lifetimewarranty*.• Certified clean room

assembly• Inpro Seal’s VBXX non-contact

Vapor Block Bearing Isolatorskeep lubricants in andcontaminants out

• Top vent replaced with plug

Unique, External Micrometer Impeller Adjustment enables accurate impeller clearance setting in 20 seconds •Superior to jackscrews •Protected with O-rings

Metal-to-Metal

Construction assures a true running and concentric shaft, extending bearing and mechanical seal life

* Note: Adherence to properinstallation, operation andmaintenance proceduresis necessary for lifetimewarranty. Contact yourFlowserve representativefor detailed terms andconditions.

• Lubrication options– Oil mist systems– Shielded and grease

lubricated bearings(three-year bearing

guarantee)• Rigid foot design

Critical Shaft Surfaces ground to 0.4 micron(16 µin) finish to ensure secondary sealing ability of the mechanical seals

Ductile Iron Frame Adapter meets ANSI B73.1

Pumps

.010 in



The Heart of the Pump:

Shaft and Bearing DesignFlowserve offers the largestshaft and bearing componentsavailable in standard ANSI

pumps. The followingcomparison of a Mark 3Group 2 power end withthat of a major competitordemonstrates the benefitsof heavy-duty design.

Pumps

Mark 3 Heavy-Duty

Shaft and Bearings

Unique ExternalMicrometer ImpellerAdjustment reducesmaintenance time and,most importantly,

is precisely accurate.

Simply loosen the setscrews.Using a wrench rotate the

bearing carrier counterclock-wise until the impeller lightlytouches the rear cover plate.

Select the impeller setting.Each notch on the carrier ringrepresents exactly 0.10 mm(0.004 in) of clearance. For animpeller setting of 0.5 mm(0.020 in) count five notchescounterclockwise.

Move the bearing carrierclockwise the selectednumber of notches. Tightenthe setscrews and check theimpeller clearance with thefeeler gauge.

Bearings (see Table 1)Greater load handling ratingmeans extended bearing life.

Extended bearing life comparisonis the ratio of the load ratings tothe third power or:

I.B. =6078 3

=1.43 (+43%)5398

O.B. = 8709

3

=1.61(+61%)7439

Shafts (see Table 2)

Solid shafts are recommendedover shaft sleeves because theyreduce the harmful effects of deflection and vibration. Whileshaft sleeves may simplify main-tenance, solid shafts reduce it.

Proper selection of wet-endmaterials of construction andmechanical seal design offsetpositive features of the shaftsleeve option.

Table 1Bearing Comparison

Mark 3 bearings are designed to last up to 61% longer.

Flowserve 189 mm 48 mm 38 mm(7.687 in) (1.875 in) 37 (1.5 in) 90

MajorCompetitor 213 mm 45 mm 38 mm

(8.375 in) (1.75 in) 63 (1.5 in) 116

Table 2Deflection Comparison

43-252% greater stiffness,indicated by lower index numbers,results in im proved performance and reliability.

Group 2 Overhang Solid Shaft Deflection Shaft Dia. DeflectionLength Diameter Index w/sleeve Index

The formula I =L3/D4 offers an

index of deflection to comparepump designs where:I = index of deflectionL =length of shaft overhang

from bearingD=rigid shaft diameter

Note: The Deflection Index pro-vides an approximate comparisonof shaft stiffness. A detailedanalysis should be made todetermine actual shaft deflection.

Flowserve 6310 6078 kg 5310 8709 kg(13 400 lb) (19 200 lb)

MajorCompetitor 6309 5398 kg 5309 7439 kg(11 900 lb) (16 400 lb)

Group 2 I.B. Dynamic O.B. DynamicBearing Load Rating Bearing Load Rating



Advanced Mark 3 SealSentry

Design TechnologySealSentry chambers maximizeseal life, reduce pump operat-ing costs and improve pump

reliability.• Extend seal life

– Self-flushing– Self-venting– Self-draining

• Reduce maintenance andrepair costs

• Permit use of less expensiveseals and flush plans– Flush plans 11, 32, 52, 53,

etc. can be eliminated• Increase mechanical seal life• Provide a safer environment

for personnel

Mark 3 SealSentry Chambers

10

Flow M odifiers (FM) ExtendMechanical Seal MTBPM

• Flow modifiers redirect flowfrom circumferential to axial

• Balanced flow with lowpressure drop in the chamberhelps keep solids in suspen-sion, minimizing erosion

• The mechanical seal creates acentrifuging action away fromits parts

• Solids and slurry merge

into the returning flow pathand are flushed out of theseal chamber

Available Jacketed SealChambers are designedfor effective heat transferin the seal chamberarea or across theentire surface areaof the process fluid.• Use the jacketed

cylindrical borewhen seal chambercooling is the objective

• Use the jacketed FMseal chamber when

protection of theprocess temperatureis important

Pumps

FMCB

Jacketed Seal Chambers



The SealSentry family of sealchambers offers three FM (flowmodifier) and two cylindricalbore (CB) options.

FM L

Designed with a large glandbolt and gasket circles, theFML is preferred for mostapplications.• Single internal cartridge seals• Dual internal/external

cartridge seals• Single internal component

seals with flexibly mountedseats

• Dual internal “true” tandemdesign cartridge seals

FM S

Similar to the FML, the FMSaccommodates seals with smallgland bolt and gasket circles.• Single seals with all seat

mounting configurationscan be installed

FM I

The FMI incorporatesa cast-in integral gland.• Single internal,

flexibly mounted seals• Sanitary-type

applications• Utilizes sleeve for

seal setting and fastinstallation

Pumps

Mark 3 SealSentry Chambers

CBLDesigned with an oversizedcylindrical step bore, the CBLis ideal for seals with largegland bolt and gasket circles.• Dual internal component

seals isolate the seal chamberfrom the process withexternal source flush

• Single seal with throttlebushing and flush to boostpressure over flash point

CBS The CBS cylindrical boreseal chamber is designed forpacking arrangements andconventional seals with smallgland bolt and gasket circles.



Mark 3 Impellers

12

Pumps

Radial Vane Impeller

is available for low-flow,high-head applications.See pages 22 and 23.

Exclusive Re verse VaneImpeller with balanceholes offers importantperformance enhancing,maintenance-reducingadvantages.

Front Vane Open StyleImpeller is fully inter-changeable with thereverse vane impeller.Excellent choice forfibrous, stringy materialsand certain applicationsrequiring high shearagainst the casing.

In-shop Im pellerAdjustment is practicalas well as productive.

Low Predictable Seal Chamber pressure means longer seal life

Rear Cover wear surface versus casing means lower replacement parts costs

Clearance is set to the rear cover in the shop – not to the casing which is left in the piping

Lowest Overallrequired NPSH of any standard pump

Flowserve Durco reverse vaneimpellers deliver unequalledefficiency and performance. This exclusive impeller designextends bearing and seal life.

• Low, Predictable SealChamber Pressure a nd ThrustLoads resulting from backvane pumping action andbalance holes

• Lowest Required NPSH of anystandard pump

• Rear Cover Plate W ear

Surface as the flow pathexits the rear of the impeller.Abrasive wear is on the rearcover rather than the moreexpensive casing

Recessed Im pellerpumps offer excellentsolids-handlingcapabilities.See page 28.

• In-shop Impeller Adjustment

with the only impeller designthat takes full advantage of the back pull-out feature.Since the critical running

clearance is set between therear of the impeller and therear cover plate, both impellerand mechanical seal settingscan be done in the shop, “onthe bench,” instead of underadverse field conditions

• Repeatable Performance

Assurance with the onlyimpeller design that offersrepeatable seal chamberpressures and bearingthrust loads



Pumps

Performance Life Cycle:Durco Reverse Vane Im peller

with Balance Holes

Effects of Wea r

• Thrust loads decrease asseal chamber gap widens• Chamber pressure increases

as gap widens

Effects of Impeller Adjustmentto Seal Chamber

• Original pressures andloads re-established afteradjustment

• Repeatable cycle life

Performance Life Cycle:Front Vane Open Style

Impell er with Pump Out Vanes

Effects of Wear

• Thrust loads increase as sealchamber gap widens• Chamber pressure increases

as gap widens

Effects of Impeller Adjustmentto Casing

• Chamber pressures andbearing loads increase aftereach adjustment

• Non-repeatable cycle life

Reverse Vane Impeller

has only one set of pumping vanes and onecritical tolerance location– between the impeller

and rear cover –to establish:•Performance•Efficiencies•Seal chamber pressures•Thrust/axial loads

Since an impeller can onlybe set in one direction,the reverse vane impellerhas inherent advantages.

Only Flowserve Durco

reverse vane impellersoffer repeatable perform-ance after wear andimpeller adjustment.

Front Vane Open Style

Impeller has two setsof pumping vanes and twocritical tolerance locations:• The front vane of the

impeller clearance to thecasing establishes:– performance– efficiencies

• The impeller pump outvanes clearance to therear cover establishes:– seal chamber

pressures andseal life

– thrust loads andbearing life

An impeller cannot beadjusted to two locations.

Seal and bearing life arereduced due to increasedloads after wear andmaintenance adjustment.

ReverseVaneImpellerAdjustment

FrontVaneImpellerAdjustment

Only One

Tolerance:Impeller VaneTo Cover

Pump-OutVanes

PumpPerformanceVanes

Consistent, Like-New RepeatablePerformance

Thrust Original Axial Thrust

Seal Chamber PressureOriginal Chamber Pressure

Cycles Repart

Effects of Wear & Impeller Readjustment

Diminished Performance

Thrust

Original Axial Thrust

Seal Chamber Pressure

Original Chamber Pressure

Cycles Repart

Effects of Wear & Impeller Readjustment S e a l C h a m b e r P r e s s u r e / A x i a l T h r u s t

S e a l C h a m b e r P r e s s u r e / A x i a l T h r u s t

Reverse Vane Impeller Front Vane Open Style Impeller



Mark 3 Shafts and

Sleeves

14

Shaft Material Choicesinvestment cast or highalloy bar stock availablein a wide range of materials.

Flowserve recommendsthe use of solid shaftsrather than shaft sleevesto reduce the harmfuleffects of deflectionand vibration. Shaftsleeves may simplify

maintenance but solidshafts reduce it.

Pumps

Shaft Choices

Friction-Welded: a steel power end friction-welded to a solid alloy wet end

Composite: a steel shaft end-to-end with an integral (i.e., not replaceable) sleeve of DC8, SD77 high silicon iron, ceramic (alumina

or zirconia)

Solid: steel end-to-end or stainless alloy end-to-end

Hook Sleeve: a steel shaft end-to-end or a steel power end friction-welded to a stainless wet end accom- modating a hook sleeve

Mark 3 shafts and sleevesare designed to improvepump reliability.

➄ Accurate machining under bearings ensures perfect bearing fits without vibration or hot running.

➅ Run-out of 0.03 mm (<0.001 in)

at mechanical seal allows seal faces to run true.

➆ Critical surfaces ground to a surface finish of 0.4 micron (16 µ in) ensure the secondary sealing ability of mechanical seals.

➇ Steel power ends handle higher horsepower loads than stainless.

➀ Radiused “sled-runner” keyways improve strength at this stress point.

➁ Offset keyways aid shaft balance.

➂ Alloy identification on every shaft and sleeve ensures that the right parts go in every time.

➃ Large radii fillets add strength.

➈ Minimally radiused edges ensure full contact with impeller for reduced run-out.



Specify genuine Mark 3 parts foryour pump maintenance needs.

In addition to sure-betmaintenance savings only

Flowserve offers:•Parts that are guaranteed tofit…to last… and to perform

•Lifetime casting guarantee•Quality assured safety for

operating and maintenancepersonnel

• Off-the-shelf availability froma computer-linked network

• Machining and modificationservice for special orders

• 24-hour emergency service

• Application and materialsexpertise

• Complete analysis of yourmaintenance needs withrecommended parts inventory

Flowserve foundries are widelyregarded as among the best inthe world pouring alloys fromductile iron to stainless steels tolight reactive alloys such astitanium. All wet-end Mark 3castings carry a limited lifetimeguarantee.

Attesting to the world-classquality of its castings, Flowservewas the first high alloy foundryin the United States of Americato have earned approval byGermany’s TechnischerÜberwachungs Verein (TUV).

Pumps

ACI Equivalent Wrought ASTMDesignation Symbol Designation Designation Specifications*

Ductile Iron DCI None None A395Carbon Steel DS None Carbon Steel A216 Gr. WCBCF-8M D4 CF8M 316 A744, Gr. CF-8MDurcomet 100 CD4M CD4MCuN Ferralium® 255 A995, Gr. 1BDurimet 20 D20 CN7M Alloy 20 A744, Gr. CN-7MDurcomet 5 DV None None NoneCY-40 DINC CY40 Inconel® 600 A494, Gr. CY-40M-35 DM M351 Monel® 400 A494, Gr. M-35-1Nickel DNI CZ100 Nickel 200 A494, Gr. CZ-100Chlorimet 2 DC2 N7M Hastelloy® B-2 A494, Gr. N-7M

Chlorimet 3 DC3 CW6M Hastelloy® C-276 A494, Gr. CW-6MDuriron® D None None A518, Gr. 1Durichlor 51® D51 None None A518, Gr. 2Superchlor® SD77 None None NoneDC-8 DC8 None None None Titanium Ti None Titanium B367, Gr. C-3 Titanium-Pd Ti-Pd None Titanium-Pd B367, Gr. C-8AZirconium Zr None Zirconium B752, Gr. 702C*Alloys conform to the chemical and mechanical requirements of the latest edition of the ASTM specification.

® Duriron, Durichlor 51 and Superchlor are registered trademarks of Flowserve Corporation.® Ferralium is a registered trademark of Langley Alloys.® Hastelloy is a registered trademark of Haynes International, Inc.® Inconel and Monel are registered trademarks of International Nickel Co. Inc.

Flowserve Durco Alloy Materials

Mark 3Pump Parts and Alloy Materials



Extend Pump and Seal Life

at Reduced CostFlowserve offers five pre-engineered baseplate designsto improve pump performance

and reduce costs (see page 17).Flowserve pre-engineeredbaseplates extend pump andseal life by reducing internalpump stress and vibrations. That is why Flowserverecommends reinforcedrigid baseplates.

Mark 3 Pre-Engineered

Baseplate Designs

16

Plus, customers who knowthe value of pre-engineeredand reinforced baseplateshelp avoid potential confusionin specification interpretation,

delays in shipments andadded costs.

Flowserve offers a broadrange of metal and non-metallic, grout and stiltmounted designs andstandard options. This

provides broad flexibilityin choosing the baseplatethat best meets application

needs and operatingbudget.

Pumps

1 Machined coplanar mounting surfaces to O O O O O O Y

0.17 mm/m (0.002 in/ft) with 3.2 micron (125 µ in) finish2 Added structural (cross member) support N N Y Y Y Y Y

3 Added torsional support with end caps NR Y Y D O O Y

4 Tapped holes for four (4) motor adjuster bolts O O O Y O O Y

5 Four (4) - SS transverse jack bolts - motor adjusters O O O Y O O Y

6 Sloped surface to an integral drain N N C N N N Y

7 Integral sloped drip rim around base N N N N N Y Y

8 102 mm (4 in) diameter grout holes -max. 762 mm (30 in) run to vent Y Y Y N Y Y Y

9 13 mm (1/2 in) vent holes at corner of each chamber NR O NR NA Y Y Y

10 Lower surface shaped to anchor in grout N N N NA Y Y Y

11 Integral lifting eyes at four (4) corners O Y O O Y Y Y

12 Tapped leveling holes four (4) corners O O N S Y Y Y

13 Continuous seam weld construction NA Y NA O Y Y Y14 Welded raised lip around grout hole(s) NR NR NR NA NR NR O

15 Stilt mounting options with floor cups NR NR O Y D D D

16 Spring mounted load designs NA NA O O D D D

17 Catch basin (304SS or other materials) O O O O O NR Y

18 Option for eight (8) total motor adjusters D D O D D D Y

19 Dimensions to ANSI B73.1 Y Y Y Y Y Y Y

Y = Standard N = Not available NR = Not recommended D = Needs design timeO = Optional NA = Not applicable C = Sloped catch basin with 25 mm (1 in) drain (option) S = Stilts for leveling

See page 17 for model descriptions

Item Standard Options Type A Type B Type C Type D Type D Type ENo. Gp 1 & 2 Gp 3 with Rim



Flowserve offers a family of fivetypes of pre-engineered baseplatedesigns to extend pump life andreduce costs.

Pumps

Reducing Internal Stress

and Vibration Extendsthe Life of Pumpand Motor Packages

Pump users specify rigid

baseplate designs to:• Provide torsional lateral

and longitudinal rigidity• Improve vibration

dampening• Protect against transit

damage• Resist twisting during

installation• Maintain shaft alignment• Reduce installation and

shaft alignment time• Reduce diaphragming

or separation from grout• Improve pump, motor

and seal reliability• Reduce total life cycle

pump, motor andseal costs

Rigid Design Begins WithThick Plate Construction

Metal baseplate sizes:• 139 to 258 feature

13 mm (1/2 in) steel

plate construction• 264 to 280 feature16 mm (5/8 in) steelplate construction

• 368 to 398 feature19 mm (3/4 in) steelplate construction

Polybase baseplates areconstructed of 76 mm(3 in) to 102 mm (4 in)solid polymer concrete.Baseplate types B, C, D

and E are reinforced withadded structural supportfor improved rigidity.

Mark 3 Baseplates

Type AStandard ANSI baseplate; foundation or limited stressstilt mounted.

Type BPolybase™ baseplate;foundation or stilt mounted.

Type CReinforced baseplate;stilt mounted.

Type DReinforced baseplate; foundation mounted; with optionaldrip rim.

Type EHeavy-duty, foundation mounted baseplate; complies with PIP RESP 002.



Polybase ™ Solid Polymer Concrete

Baseplate

18

Pumps

Polybase™ and Polybloc™

Solid Polymer ConcreteAdjustment System

Polybloc – Motor

Mounting Block

• Flatter and morerepeatable height toler-ances than steel

• Corrosion resistant• Superior vibration

dampening• Full foot support

(no overhang)• Shown with optional

bloc-lock and fastenersupport

• Available for otherpump and motor oralternate equipmentapplications

8-Point Adjuster

•Allows precise motoradjustment to reducealignment time

•Used with recessedbloc-lock device

Baseplates are Fundamental

to Extending Pump Life

The test stand provided threecorner support of the ungroutedbaseplates. The addition of weights on the unsupportedfourth corner caused baseplatedistortion. This distortionresulted in measurable shaftmovement that can causeproblems with field instal-lations and negatively affectpump reliability and life.

The twist test is a means

of comparing rigid baseplatedesigns. Correctly installedrigid baseplates should notexperience these twist effects.For more information aboutthe results of baseplate testingcontact your local Flowservesales representative.

Type B –Polybase baseplate

Polybase

• Low installed cost• Superior vibration dampening• Corrosion resistant• Superior resistance to twisting

or diaphragming• Optional catch basin and

grout holes

• Inserts available for alternateequipment configurationrequirements

Cast Iron0.125 sec.

Polymer Concrete0.125 sec.

© John F. Kane, Composites Institute, The Society of the Plastics Industry, Inc.

Baseplate Rigidity Test –

Twist Mode

0.070 (1.78)

0.060 (1.52)

0.050 (1.27)

0.040 (1.02)

0.030 (0.08)

0.020 (0.51)

0.010 (0.25)

0.000 (0.00)

A

D

E

B

C

0 100 200(45) (91)

Load - lb (kg)

D e f l e c t i o n – i n c h ( m m )

Type A 0.022 in (0.56 mm)

Type B 0.004 in (0.01 mm)

Type C 0.003 in (0.08 mm)

Type D 0.016 in (0.41 mm)

Type E 0.005 in (0.13 mm)

Maximum Parallel ShaftDeflection at Applied Force

Vibration Damping of Polymer

Concrete Versus Cast Iron



The Polyshield Baseplate

and Foundation System isthe superior solution for cost-effective, high-performancepump installation. In one

complete unit, it combines atraditional baseplate with aformed concrete foundationfor pump-drive sets.

Benefits of Selecting the

Polyshield Baseplate andFoundation System

• Time savings– Quick installation time

– Reduces time spanfrom receipt at jobsiteto commissioning

• Cost savings– Reduces total installed cost– Dramatically minimizes

field rework necessaryto meet specifications

• Better performanceand reliability– Extended pump life– Reduced vibration– Improved corrosion

resistance• Single structure convenience

– One-piece construction– Flat mounting surfaces– One-piece motor

mounting block

The Polyshield baseplateand foundation systemcan be combined withnumerous pumpdesigns, including:

• ISO and ANSI metallicand non-metallic

• Foot- and frame-mounted generalindustrial

• Foot-mountedbetween bearings

• API 610

Please see Bulletin PS-90-2 for more complete product information.

Product literature available at www.flowserve.com.

Pumps

Flowserve Polyshield

Polymer Baseplate and

Foundation System



The Mark 3 offers uniquedesign technologies andcomponent options withsuperior pump application,installation, process and

selection knowledge. Theseextend pump performanceand increase realiability.Certain applications needtechnical advancementin pump design and perform-ance-enhancing options forcontinued reliability.

Centerline Mounted Casings

may be used to reduce loadscaused by thermal expansion. J acketed feet with inlet andoutlet ports further ensureeffective temperature control.

Options to Solve Application

Problems

20

Ultralign™ Hea vy-Duty, RigidDesign C-Flange Adapter

• Cantilevered motor shaftstays aligned with pump shafteven with undesirable move-ment caused by piping andtemperature induced stress

• Eliminates foot mounting of motor and pump power endto the base, reducing softfoot, twisting anddiaphragming problems

• 0.18 mm (0.007 in) nominalparallel shaft alignment;0.05 mm (0.002 in) withfour point C-Plus precisionalignment option

• <0.001 mm/mm (0.001 in/in)angular alignment

Adjustable Rigid Foot Mountis designed to support allnormal loads and ensuresaccurate alignment to thebaseplate and piping.

Unique C-Plus PrecisionAlignment System (Four

Point) routinely deliversshaft alignments below0.05 mm (0.002 in) inless than 30 minutes.

Available Stilt M ounted

Baseplate provides relief of external pipe loads byallowing the assemblyto move to the point of least resistance.• Stilts can allow for

improved pump align-ment to process pipe

• Spring load optionabsorbs vibration andreduces need for pipeloops or expansion joints

Pumps

Jacketed Casings providetemperature control. Integral(shown) and bolt-on jacketsavailable.

MotorAdapter

MotorMountingStud

Nut

SpacerRing

Jam Nut

MotorAdjuster



ClearGuard and DurcoShield

Non-metallic Safety GuardsClearGuard and DurcoShieldpump guards permit visualinspection of coupling and seal

areas, respectively, whileprotecting personnel frompotential safety hazards of rotating parts. Constructed of tough, durable, and transparentpolycarbonate with UV lightinhibitors, they are designedto withstand tough chemicalprocessing environments.

ClearGuard Non-metall icCoupling Guard meetsmachinery guard safetyguideline. Nothing larger than6 mm (0.24 in) in diametercan enter the shell. Furthermore,the ability to inspect thecoupling through ClearGuardcan provide early warning of deteriorating or malfunctioningcomponents.

DurcoShield* Splash and Shaft

Guard is a one-piece shield thatenvelops the open areas betweenthe bearing housing and casing.Suitable for applications to

150°C (300°F), DurcoShieldprotects users from:• Process fluid spray• Rotating shaft and seal

components

Note: DurcoShield is not acontainment system or a sealbackup system. It is a limitedprotection device. It willreduce, but not eliminate,the probability of injury.

*Protected by US patentnumber 5,807,086

Pumps

ClearGuard and DurcoShield Pump Safety Accessories



The Flowserve Mark 3 Lo-Flopump is designed to improvepump reliability and performancein low-flow, high-head applications. The first pump manufacturer to

introduce an ANSI standard low-flow, high-head pump, Flowservedeveloped its innovative radialvane impeller and circular,concentric casing to reduceradial loads and shaft vibrationwhile extending bearing andmechanical seal life.

Mark 3 Lo-Flo ™ Pump

22

The Flowserve Mark 3 Lo-Flopump conforms to ANSI B73.1and is completely interchangeable

with the industry-leadingMark 3A power end.


• Flows to 50 m3/h(220 gpm)

• Heads to 300 m(985 ft)

• Pressures to 31 bar(450 psi)

• Temperatures from-75°C (-100°F) to370°C (700°F)

Pumps

Radial Vane Impeller provides improved performance over a broader application range

Circular Concentric Casing reduces radial loads and vibration and extends bearing and seal life

SealSentry™ Seal Chambers extend seal life and provide advanced self-flushing ability

External Micrometer Impeller Adjustment accurately sets impeller clearance in 20 seconds,in the shop or the field



Innovative Radial Vane

Impeller has a unique twist toprovide superior performance inlow-flow, high-head conditions.

Circular Concentric Casing ismore hydraulically efficient atlower flow rates. An internalbypass drilled in the dischargewithout breaching the casingwall or creating a potentialleak path. This helps tobalance pressures. Improved Performance

and Reliability

The innovative radial vaneimpeller and circular, concentriccasing of the Flowserve DurcoLo-Flo pump improve pump

performance and reliability whencompared to standard pumps.Furthermore, maintenance isreduced.• Reduced radial loads up to

90% at low-flow conditions• Minimized thrust loads• Reduced NPSH requirements• Reduced shaft vibration• Extended bearing life• Extended mechanical seal life• Broadened application range

Four Sizes

• 1K1.5x1LF-4• 1K1.5x1LF-8• 2K2x1LF-10• 2K3x1.5LF-13

Offered in a wide rangeof metallurgy to meetapplication needs.


• Standard Mark 3Apower end with doublelip oil seals and topvent/breather

• ANSI 3A™ power end(see page 8) featuringInpro VBXX bearingisolators and up to alifetime warranty

Pumps

Expanding Volute Casing

Circular Concentric Casing

100%

75%

50%

25%

0%0 100 200

0 25 50Lo-Flo

StandardFlow

P e r c e n t o f m a x i m u m v

i b r a t i o n

o f t h e s t a n d a r d p u

m p

gpm

m3/h

SHAFT VI BRATION

Reduced Vibration

Shaft vibration is a criticalfactor in both bearingand mechanical seal life.Reducing shaft vibrationresults in significantlyimproved pump perform-ance and reliability.



Dynamic Sea ling

With the Flowserve Mark 3Sealmatic pump, no mechanicalseal is needed during operation.A dynamically sealing repeller

(expeller) expels fluid from theseal chamber, making it ideal forhard to seal applications.Furthermore, the need for external

flushing and process contamina-tion control are eliminated.

The Sealmatic pump conformsto ANSI B73.1.

Mark 3 Sealmatic

Pump

24

Applications

• Tough services where sealingis difficult

• Services where a flushis undesirable

(e.g., evaporator feed)• Continuous, around-the-clock

applications• Batch operations where a “run

dry” condition might exist





• Temperatures from-75°C (-100°F) to370°C (700°F)

Pumps

Standard Reverse Vane Im peller offers repeatable pump performance throughout the life of the pump

Spinning Expeller creates centrifugal force to expel fluid from the seal chamber

External Micrometer Impeller Adjustment accurately sets impeller clearance in 20 seconds, in the shop or the field



Choice of Static Sealing OptionsFlowserve provides a choiceof static sealing options to keepthe pump from leaking while thepump is stopped. They include:• Flexible graphite packing• Dry-running end-face seal• Stationary fluoropolymer

disk seal – FXP• Elastomeric lip seals

Benefits of Sealm atic DynamicSeal ing Technology

• Eliminates the need forconventional mechanical seals

• Eliminates need for externalflush and associated productdilution

• Eliminates need for

contamination control

Your choiceof three (3)sealingarrangements

Repeller chamber

Liquid/airinterface

Repeller

RunningStopped

25

Dynamicall y Sealing Expeller

evacuates liquid from the sealchamber using centrifugalforce. This design is ideal fortough sealing applications.

Seventeen Sizes• Eleven Group 22K2x1M-10A2K3x1.5M-10A2K3x2M-10A2K4x3M-102K4x3M-10H2K6x4M-102K6x4M-10H2K3x1.5M-132K3x2M-132K4x3M-132K6x4M-13A

• Six Group 33K8x6M-14A3K10x8M-143K6x4M-163K8x6M-16A3K10x8M-163K10x8M-16H


Additional Configurations

The Sealmatic designalso is available inrecessed impeller andin-line configurations.

Pumps



Unitized Casing has largepriming chamber, airseparator and volute inone integral component.Eliminates the need for a separate priming tank

High and Dry

The Flowserve Mark 3 UnitizedSelf-Priming pump is engineeredto draw from liquid sourcesbelow ground level or from

sources which have no positivepressure to naturally prime thepump. Conveniently located highand dry at ground level whereinstallation is simple andmaintenance is easily and moreeconomically performed, theMark 3 Self-Priming pump costsless to buy, install and maintainthan submersible pumps.

Mark 3 Unitized

Self-Priming Pump

26

The Mark 3 Self-Priming pump’scompact design enables it to fitin tight clearance locations.It also can be mounted on atrailer for movement to various

pumping locations, such aswastewater lagoon service.

Applications

• Sump service• Tank car unloading• Duplex pumping lift station• Fly ash pond transfer• Waste acid transfer• Waste treatment

lagoon service





• Temperatures to 370°C(700°F)

• Static suction lift to6 m (20 ft)

Pumps

Standard Reverse Vane Impeller offers repeatable pump performance throughout the life of the pump


External M icrometer Im peller Adjustment accurately sets impeller clearance in 20 seconds,in the shop or the field



The Priming Cycle

The Mark 3 Unitized Self-Priming pump uses liquidrecirculation to prime the pump. The pressure differentialbetween the aerated liquid

at the impeller and the non-aerated liquid in the primingchamber creates a vacuum thatpulls liquid up the pipe. As aresult, the Mark 3 UnitizedSelf-Priming pump is idealfor suction lift applications orpumping liquids with entrainedair or gases.

Benefits of the Mark 3

Unitized Self-Priming Pump

• Eliminates internal valves• Eliminates external priming

devices or foot-valves• Portable• Compact• Ease of installation• Ease of maintenance


• Standard Mark 3A power endwith double lip oil seals andtop vent/breather

• ANSI 3A™ power end

(see page 8) featuring InproVBXX bearing isolators anda lifetime warranty

Eight Sizes

• Two Group 11J1.5x1US-61K1.5x1.5US-82

• Six Group 2

2K2x1.5US-10A2K3x2US-102K4x3US-10H2K3x2US-132K4x3US-132K6x4US-13A


Pumps

Air BleedLine



Vortex Action

The Flowserve Mark 3Recessed Impeller pumpcombines the best designfeatures of the Mark 3 ANSI

Standard pump with the vortexaction of a recessed impeller. These specific purpose featuresalong with thick wall wet-endcomponents offer extendedservice life when handlingsolid, stringy or fibrous slurries.

Mark 3 Recessed

Impeller Pump

28

Applications

• Light slurries• Corrosive or erosive services• Large diameter solids• Waste streams

• Fluids with which shearingmust be avoided

• Protection of solids integrity





• Temperatures from-75°C (-100°F)to 370°C (700°F)

Pumps

Vortex Action minimizes abrasive wear while maintaining solids integrity because only a fraction of the media contacts the impeller

Duplex Stainless Steel Construction standard. Available in all standard Mark 3 alloys

Precision Cast Impeller provided in CD4MCuN duplex stainless steel standard. All standard alloy materials available


Cylindrical Volute Casing With Tangential Discharge minimizes turbulence,improving pump performance and decreasingabrasion



Precision Cast Open Impeller

The Mark 3 Recessed Impellerpump comes standard with anopen impeller that ensurespeak energy efficiency andlow NPSHR. The impellerincorporates pump-out vanesthat ensure low, positive sealchamber pressure and expelsolids from critical seal areas.Mechanical seal or packing lifeis maximized.

Cylindrical Volute Casing

minimizes radial loads on theimpeller. The result is longerseal life as well as maximizedradial bearing life.

Vortex Pumping Action

The vortex created by the spin-ning impeller does the pumpingwith less than 20% of mediacontacting the impeller.Abrasive wear is minimized andsolids integrity maintained.


• Standard Mark 3A power endwith double lip oil seals andtop vent/breather

• ANSI 3A™ power end (seepage 8) featuring Inpro VBXXbearing isolators and up to alifetime warranty

Pumps

Benefits of the Mark 3

Recessed Im peller Pump• Improved solids handling• Improved air and gas

handling

• Improved ability to passfibrous or stringy substances

• Reduced wear• Low NPSHR

Five Sizes

• One Group 11J2x2R-61K1.5x1.5US-82

• Four Group 2

2K2x2R-102K3x3R-102K4x3R-132K6x4R-13


AdditionalConfigurations

The Mark 3 RecessedImpeller pump can be

specified with theSealmatic dynamicallysealing expeller andas self-priming withpriming tank option.



Without Equal

Designed to exceed ANSI B73.2criteria, the Mark 3 In-Lineprocess pump offers improvedpump reliability and extended

pump life. The space-savingMark 3 In-Line has broadapplication in chemical andhydrocarbon processing as

Mark 3In-Line

Chemical Process Pump

30

well as in general industry forservices, including:• Chemical transfer• Heat transfer• Liquid gases

• Storage• Water• Washdown and cleaning• Condensate return• Light slurries






• Motor sizes to 110 kW(150 hp)

Pumps

Please see Bulletin PS-10-15 for more complete product

information.



PolyChem S-Series

Fluoropolymer Lined ChemicalProcess Pump

The non-metallic PolyChemS-Series chemical process

pump conforms to ANSI B73.1,ISO 2858 and J IS drillingstandards to meet globaldemands. Its PFA-lined wet endoffers outstanding corrosionand temperature resistance.



• Heads to 145 m (480 ft)• Pressures to 17 bar (250 psi)• Temperatures from -30°C

(-20°F) to 150°C (300°F)



• Flows to 2500 m3/h(11 000 gpm)

• Heads to 150 m (500 ft)• Pressures to 17 bar (250 psi)• Temperatures to 120°C

(250°F)

PolyChem GRP

Engineered PolymerComposite Chemical

Process Pump

The PolyChem GRP glassreinforced vinyl esterchemical process pumpconforms to ANSI B73.5.With corrosion resistancesuperior to more

expensive, high alloymetals and costs closerto that of ductile iron,the PolyChem GRP pumphas proven to be the low-cost, long-term solutionin corrosive applications.


Pumps

Flowserve PolyChem™Non-metallic

Pumps



CPXS ISO Magnetic Drive Pump

The CPXS magnetic driveprocess pump conforms to ISO2858 dimensional and ISO5199 design criteria. It is CE

marked and compliant withapplicable European directives,such as ATEX.



• Heads to 160 m (525 ft)• Pressures to 25 bar (365 psi)• Temperatures from -40°C

(-40°F) to 370°C (700°F)

Guardian ANSI Ma gnetic

Drive Pump The Guardian magnetic drivepumps meet ANSI B73.1dimensional standards and areavailable in 18 sizes. Offered ina wide range of corrosion-resistant materials, theGuardian magnetic drive pumpis ideal for high temperature,leak-free applications.

PolyChem M-SeriesPFA-Lined M agnetic

Drive Pump

The PolyChem M-Seriesfluoropolymer lined,magnetic drive pumpmeets ANSI B73.1, ISO2858 and J IS drillingstandards.

Operating Parameters• Flows to 135 m3/h

(600 gpm)• Heads to 145 m

(480 ft)• Pressures to 17 bar

(250 psi)• Temperatures to 150°C

(300°F)







FlowserveCPXS, PolyChem

and Guardian Magnetic Drive

Pumps

32

Pumps

Please see Bulletin PS-10-30 for more complete productinformation.




The KW941 Pump PowerMonitor monitors and displaysactual power to the pump,offering simultaneous protectionfrom underload and overload

operating conditions.

Pumps

Durco KW941 Pump Power

Monitor

Broad Application Range

• Works on all pumpshaving steady(non-pulsating) loads:centrifugal; gear;

turbine; ANSI; API; ISO;paper stock; sealed;mag drive; cannedmotor; self-priming

• One model for upto 600 hp (450 kW).Premium features forreliable protection

• Push buttons displayhorsepower orkilowatts; automaticconversion whenswitching displays

• Adjustable low powerand high power setpoints protect pumpfrom underload andoverload operation.Alarms can be trippedor pumps shut downbefore damage occurs

• Adjustable trip delaytimers filter outnuisance trips causedby temporary power

fluctuations• Adjustable start-updelay timer is particularly

useful in self-primingapplications

• 4 to 20 milliampanalog output facilitatesremote displays,operator interface andoutput to PLC or DCS

• Two form C relayoutputs for low andhigh power trips.

Outputs can be usedto shut down pumpor trip alarms

• Automatic, manual andremote reset options forversatile operation

The KW941 helps to eliminatecostly downtime and expensivepump repairs caused by:• Dry running• Pump overloads

• Cavitation• Blocked lines• Closed suction or

discharge valves• Excessive wear or rubbing

The KW941 Power M onitor is easy to install on new or existing pump installations.All connections and controls are located at motor starter electrical enclosure as shown. Costly instrumentation wiring to the pump is eliminated

P O W E

R

A M P E R E

S

0% MOTOR LOAD 100%

Typical Low Flow/No Flow PumpProtection Zone

P O W E R / C U R R E N T

By Sensing Power and not just amperes, linear measurements are provided with the sensitivity to detect improper operation while eliminating unwanted nuisance trips

Easy Setup and Calibration

• Settings controlled from frontpanel push buttons; no internaladjustments, dip switches orpotentiometers

• Large digital display for easyviewing and accurate settings

• One step calibration can beperformed without operatingpump. No need to run pumpat off-operating conditionsto calibrate power monitor

• Settings can be viewedor adjusted during normalpump operation



FlowserveCPX and FRBH Process Pumps

34

Pumps

CPX Family of ISO

Chemical Process Pumps The CPX family of ISO chemicalprocess pumps offers a widerange of configurations

including mechanically sealed,magnetic drive, self-priming,

close-coupled and vertical pumps.Parts interchangeability amongthe configurations is a keybenefit of the CPX family,translating into inventory andmaintenance costs savings.



• Heads to 230 m (760 ft)• Pressures to 24 bar (350 psi)• Temperatures to 370°C

(700°F)• Motor sizes to 110 kW

(150 hp)

FRBH Heavy-Duty

Paper Stock andProcess Pump

The FRBH is one of theworld’s most efficientand reliable pumps –one that will performeffectively not only atthe best efficiency pointbut across a broadoperating range. Thehigh efficiency andrugged construction of the FRBH translate into

reduced operating costs.

Operating Parameters• Flows to 6800 m3/h

(30 000 gpm)• Heads to 100 m

(325 ft)• Pressures to 14 bar

(200 psi)• Temperatures to 150°C

(300°F)





Pumps

GlobalEngineered Services

and Support

Total Cost Reduction

Asset Management

Product Life Cycle

Performance Re-rates

Site Diagnostics

Repair Services

Energy Management

Spare Parts

Maintenance Contracts

Materials Upgrades

Turnkey Services

Field Repairs

Installation

Project Supervision

Commissioning

Equipment Upgrades

Condition Monitoring

Systems Analysis

Field Machining

Service DedicationFlowserve Engineered Services isfocused on providing customerswith uncompromising service andsupport, where and when needed.

Dedicated to delivering the high-est quality support, EngineeredServices integrates its extensivepump and materials engineeringknowledge with creative servicesolutions. Engineered Servicesfully understands the businesschallenges facing customers andis prepared to manage solutionsto succeed as a team.

A worldwide network of serviceand repair centers staffed byhighly skilled engineers andtechnicians is available aroundthe clock, seven days a week torespond to customer queries,to evaluate and troubleshootproblems and to providereliable solutions.

Strength of Experience,

Commitment to ExcellenceFlowserve has long servedindustries requiring superiorequipment performance and

service life.• Oil and gas production• Hydrocarbon processing• Chemical processing• Water resources• Power generation• Nuclear• Mining and mineral processing• Pulp and paper• General industry

Engineered Services is dedicatedto maximizing equipmentperformance and providingreliability-centered maintenanceprograms for pumps and relatedequipment, regardless of manu-facturer. Using the FlowStar™asset management software,Engineered Services tracksperformance and supportsimprovement programs using aservice life cycle cost businessapproach. The results areimproved reliability and

increased profitability.

Business Pa rtner

Flowserve partners withcustomers to respond tothe dynamic businessconditions that affect

them. Flowserve will workwith customers to driveefficiency, maximizethroughput and controlprocess quality. Whetheruser needs involve on-site technical assistanceor broader projectplanning with full turnkeyresponsibility, FlowserveEngineered Services willdeliver professional,reliable results.

35



Printed in U.S.A.February 2007

© Flowserve Corporation

To find your local Flowserve representativeplease use the Sales Support Locator System

found at www.flowserve.com

Or call toll free: 1 800 728 PUMP

Y o u r l o c a l F l o w s e r v e r e p r e s e n t a t i v e :

Pumps

USA and Canada

Flowserve Corporation5215 North O’Connor Blvd.Suite 2300Irving, Texas 75039-5421 USA Telephone: 1 972 443 6500

Telefax: 1 972 443 6800

Europe, Middle East, Africa

Flowserve CorporationVia Rossini 90/9220033 Desio (Milan), Italy Telephone: 39 0362 6121 Telefax: 39 0362 303396

Latin America and Caribbean

Flowserve Corporation6840 Wynnwood LaneHouston, Texas 77008 USA Telephone: 1 713 803 4434 Telefax: 1 713 803 4497

Asia Pacific

Flowserve Pte. Ltd.200 Pandan Loop #06-03/04Pantech 21Singapore 128388 Telephone: 65 6775 3003 Telefax: 65 6779 4607

Flowserve.. . Supporting Our Customers

With The World’s Leading

Pump Brands

Jeumont-Schneider™Jeumont-Schneider™





Pumps

Mark 3 Product Presentation

Product Presentation

Information not provided





Pumps

Mark 3 Product Presentation






Pumps

Mark 3 Pump Cross Sectional Drawings

Cross Sectional DrawingsCross sectional drawings can be found at the following locations:

Mark 3 Technical Bulletin, P-10-501 •

Pages 34 and 35

Mark 3 User Instructions:•

Installation, Operation, Maintenance, 71569102

Pages 70, 71, and 72









Pumps

Mark 3 Pump Cross Sectional Drawings






Pumps

Mark 3 General Arrangement Drawings

General Arrangement DrawingsGeneral arrangement drawings can be found at:

Mark 3 Technical Bulletin, P-10-501 •

Page 36







Pumps

Mark 3 General Arrangement Drawings






Pumps

Mark 3 Engineering Data

General Engineering Data

Hydraulic performance HI versus ISOa.Information not provided

Temperature and pressure limitsb.


Noise levelsc.Information not provided

Nozzle loads F/Md.Information not provided

Cooling requirements for pumpse.Information not provided

Lubrication oil flow and pressuref.Information not provided

Pump data sheet formsg.Information not provided

Minimum/maximum rotating speedsh. Information not provided

Seal piping plansi.Information not provided

External pump connections/locations schematic j.Information not provided

Seal housing dimensions and pressuresk.Information not provided

Weights (pumps and baseplates)l.Information not provided

Critical speeds and suction specific speeds (NSS)m.Information not provided

Shaft diameters at seal, bearings, couplings, impellern.Information not provided

Lo. 3 /D 4


WR p. 2 and generic % speed torque curveInformation not provided

Bearing spanq.

Information not provided Shaft sagr.Information not provided

Impeller type, solids max, settings, thrust factors, balancing,s.inducers optionsInformation not provided

Minimum flowst.Information not provided

Running clearances (rings, bearings)u.Information not provided

Product line engineering calculations andv.performance correction factors


Pump rotation optionsw.Information not provided

Rotor balancingx.Information not provided

Axial thrust balancing options y.Information not provided

Casing style and flange optionsz.Information not provided





Pumps


Retrofit/Upgrade – Mark 2 to Mark 3The Mark 3 design offers many enhancements over the Mark 2;however, the Group 2 and 3 hydraulics are, in most cases,identical. It is possible to upgrade Mark 2, Group 2 and 3, pumpsto the Mark 3 by simply changing the power ends. Upgrading the

Mark 2, Group 1, pumps is a bigger challenge. The Mark 3,Group 1, pumps have a larger diameter shaft plus only one sizerear cover / seal chamber is used. The recently introduced Prima3 power end design allows this upgrade to be performed. The newpower end does require a new rear cover / seal chamber to matchthe larger shaft. However, using the Prima3 permits the end-userto enjoy all the benefits of the Mark 3 power end design whilemaintaining the system hydraulics.





Pumps


0

10

20

30

40

50

60

70

80

90

100

0 10 20 30 40 50 60 70 80 90 100

Percent Operating Speed

P e r c e n

t F u l l L o a d

T o r q u e

Figure 11.1 Typical Torque-Speed Curve - Mark 3 Pumps





Pumps


Pump SizeMass Moment of Inertia Critical Speed (RPM)

MR2(kg-m2) WR2(lb-ft2) Solid Shaft Sleeved Shaft

1K1.5X1-62 0.011 0.25 13080 9520

1K3X1.5-62 0.013 0.30 12230 8910

1K1.5X1-82 0.013 0.30 10940 7970

1K3X1.5-82 0.015 0.35 13910 11790

2K3X2-82 0.016 0.38 12940 10960

2K4X3-82 0.021 0.50 10920 9250

2K2X1-10A 0.013 0.32 13190 11190

2K3X1.5-10A 0.017 0.40 12580 10660

2K3X2-10A 0.018 0.43 13190 11180

2K4X3-10 0.023 0.55 12040 10210

2K4X3-10H 0.024 0.56 11310 9590

2K6X4-10 0.046 1.10 8780 7440

2K3X1.5-13 0.027 0.64 10920 9250

2K3X2-13 0.028 0.66 9670 8200

2K4X3-13 0.031 0.74 9330 7910

2K6X4-13A 0.073 1.73 7150 6060

3K8X6-14A 0.319 7.58 7970 6750

3K10X8-14 0.301 7.15 6620 5600

3K6X4-16 0.248 5.90 6990 5880

3K8X6-16A 0.257 6.10 7020 5940

3K10X8-16 0.461 10.94 5930 5020

3K10X8-16H 0.484 11.50 5920 5010

Table 11.1 WR2 and Critical Speed Values for Mark 3 Pumps





Pumps


Pump SizeVolume

Cubic Centimeters Cubic Inches

1K1.5X1-62 900 55

1K3X1.5-62 1130 69

1K1.5X1-82 900 55

1K3X1.5-82 1510 92

2K3X2-82 1900 116

2K4X3-82 3410 208

2K2X1-10A 1360 83

2K3X1.5-10A 2050 125

2K3X2-10A 1820 111

2K4X3-10 3180 194

2K4X3-10H 5210 318

2K6X4-10 6820 416

2K3X1.5-13 2720 166

2K3X2-13 3180 194

2K4X3-13 4770 291

2K6X4-13A 9470 578

3K10X8-14 41260 2518

3K8X6-16A 29530 1802

3K10X8-16 42770 2610

3K10X8-16H 57160 3488

Table 11.2 Standard Pump Volumes

Pump Size

Volume

Priming Liquid Only Total Casing

Cubic Centimeters Cubic Inches Cubic Centimeters Cubic Inches

1J1.5X1US-6 3030 185 3785 231

1K1.5X1.5US-82 4540 277 6440 393

2K2X1.5US-10A 6820 416 8325 508

2K3X2US-10 9080 554 11355 6932K4X3US-10H 17800 10862 1580 1317

2K3X2US-13 17420 1063 20830 1271

2K4X3US-13 21580 1317 26500 1617

2K6X4US-13A 21960 1340 27630 1686

Table 11.3 Unitized Self Primer Volumes





Pumps







Pumps

Mark 3 Standard Lead Times

Standard Lead Times

Sales Policies

General InformationAll Mark 3 pumps will be marketed through the Flowserve Pump

Division’s (FPD) field sales organization, authorized distributorsand sales representatives as well as Flowserve subsidiaries andauthorized licensees. Flowserve reserves the right to review marketareas and distribution alternatives to determine the best meansof marketing the product. The product line is grandfathered byany agreement pertaining to any other product line except wherecontract violations exist (i.e., competing lines, etc.).

The product shall be sold and distributed in accordance withFlowserve’s standard business practices. Equipment warranties arelimited to our standard policies, unless previously approved by theFPD Sales and Marketing department.

Delivery

Consult local order coordinator / customer service for all deliverycommitments and expediting.

All pumps will be built in the Chesapeake, VA (USA), or Newark(UK) plants. The main stock location for pump parts will be inChesapeake and Newark.

Newark will quote and coordinate total delivery times for any orderthat requires value-added work to be performed at Newark.

Order Entry

Orders should follow current procedures in place.

Standard Lead TimesPROS+/FlowSelex will display a standard lead time for each pump

selected. Also, you can consult your local order coordinator/ customer service representative for standard lead times.

Inquiries for lead times less than those published above should becoordinated through the application engineer that supports localMark 3 sales efforts.

Quickship ProgramChesapeake has a program in place to ship Mark 3 pumpsof certain standard configurations and materials in 48 hours.The application engineer that supports the local sales effortsfor Mark 3 pumps has access to the specifics of this program.All Quickship inquiries should be coordinated through the localapplication engineer.

Technical Assistance and SupportDistributors and representatives should contact the Flowserveregional sales office for assistance. If further assistance isrequired, please contact the following FPD personnel:

Department Contact Phone Fax e-mail

Product Management Dave Braner 757 485 8035 757 485 8191 [email protected]

Commercial Matters Dave Braner 757 485 8035 757 485 8191 [email protected]

Engineering –Mark 3 horizontal,baseplates, power monitor

Fred Hery 937 226 4053 937 226 4221 [email protected]

Engineering –Guardian, Sealmatic

Greg Denault 937 226 4232 937 226 4221 [email protected]

Engineering –Mark 3 In-Line, nozzle loads

Frank Stauble 937 226 4574 937 226 4221 [email protected]

Sales and Technical Support Contact List





Pumps

Mark 3 Standard Lead Times






Pumps

Mark 3 Typical Specifications

Typical Specifications

Design

Shall be of a horizontal, end suction, single stage, centerlinedischarge, “back pull-out” construction, meeting the design

criteria of the ASME B73.1-2001 standard.

General

All wetted parts shall be permanently marked with thematerial of construction. Cast parts shall have a conditionallifetime casting guarantee. Stainless steel parts shall be castto the ASME A744 standard.

Casing

Shall have a fully machined wet face and shall be capable of being foot

or centerline mounted. Flange finishes shall conform to ASME/ANSI

B16.5 and shall be available in DIN/PN16 or 40 (150 or 300 Class), flat

or raised faces. Casing and rear cover plate shall have 3 mm (1/8 in)

corrosion allowance.

Impeller

Shall be the reverse vane design, and shall be open on the back and

shrouded on the front. The impeller clearance shall be set againstthe rear cover, not the casing, allowing all settings to be done in themaintenance shop, without the casing. The impeller shall maintainlow seal chamber pressures, which shall be published on the pumpperformance curve, and shall be repeatable after maintenance. Theimpeller clearance shall be set externally. The impeller-to-shaftconnection shall be a metal-to-metal fit. A silicon O-ring encapsulatedin PTFE shall be used to protect the impeller threads. Impeller shallbe balanced to ISO 1940 Grade 6.3 criteria.

ShaftShall be of solid construction to maximize strength and rigidity.The shaft shall consist of a steel power end friction welded to analloy wet end. Shaft deflection shall not exceed 0.05 mm (0.002 in).The shaft key slot shall be designed with a machined radius “sledrunner” edge to provide maximum strength at the coupling. Criticalsurfaces shall be ground to 0.005 mm (±0.0002 in), maximumroughness at the seal chamber shall be 0.40 µm (16 µin).

Rear Cover

Shall be suitable for accepting various seal designs from allmajor seal manufacturers. Cylindrical bore standard, cylindricalbore oversize, and tapered options shall be available. Taperedoptions shall include eight evenly spaced, tapered and sloped flowmodifying devices integrally cast into the seal chamber. The flowmodifiers shall facilitate movement of solids, vapors, and heataway from the mechanical seal. The tapered seal chambers shallbe designed to be self-flushing. For optimum performance the sealand gland shall be selected to locate the seal faces directly in theflush path. Integrally cast jackets shall be available.

Bearings

Shall be large, heavy-duty, ball bearings. The inboard bearingshall be a single row, deep groove. The outboard shall be doublerow angular contact, deep groove. An optional duplex angularcontact outboard bearing shall be available for high thrust loadapplications. Both bearings shall be located by a shoulder on theshaft. The inboard bearing shall float in the bearing housing, whilethe outboard bearing shall be locked in place in the bearing carrier.The bearings shall exceed B10 life of 17 500 hours and allow lessthan 0.025 mm (0.001 in) end play.

Bearing HousingShall be sealed to prevent contamination of the lubricant. Theoil fill hole at the top of the housing shall be plugged. No ventedconstant level oiler shall be used. The housing shall be sealedwith Inpro VBXX bearing isolators. A magnetic drain plug shall beused. A large easy to read one inch NPT sight glass shall be used.The impeller clearance shall be set by the micrometer adjustmentmethod. This method shall cause the shaft and impeller to moveaxially. Indicators shall be cast into the bearing carrier whichrepresent 0.102 mm (0.004 in) of axial impeller travel. This allowsaccurate impeller clearance to be established externally without theuse of measurement devices. The bearing carrier threads shall beprotected by two O-rings.

Coupling Guard

Shall conform to ASME B15.1 and shall be of the “clamshell”design. It shall extend from the motor to the bearing housing,but shall not be attached to either. The guard shall be boltedto the baseplate.

BaseplateShall be of a reinforced rigid design and shall conform to thedimension requirements of ASME B73.1-2001.





Pumps

Mark 3 Typical Specifications

Standards

A list of Flowserve Global Standards pertinent to the Mark 3 lineare shown below. For copies of these standards, contact theMark 3 Pump Design Center (see table in Section 9 showingrelevant personnel).

J1-0020-016 – DuPont Joint Product Specification for ANSI Pump•

J1-1000-013 – Impeller Balance Limits•

J1-1000-023 – Required Tagging and I.O.M. Manual for ANSI•

and ISO Chemical PumpsJ1-1000-027 – ANSI Baseplate Tolerances•

J1-1000-034 – Shaft Alignment Procedure Using a Dial Indicator•

or Laser Alignment SystemJ1-1000-038 – Paint for Standard and Special Finish Coat•

J1-1000-041 – Long Term Storage Recommendations for•

Chemical Process PumpsJ1-1100-003 – Mark II and Mark III Production and Test Standard•

J1-1100-012 –• Sound Measurement for ANSI B73 Centrifugal Pumps

J1-1160-004 – ANSI and ISO Polybase Baseplates•





Pumps

Mark 3 Typical Applications

Typical ApplicationsThe Mark 3 pump line is available in a very broad range of metallicmaterials and can handle most corrosive applications within itspressure / temperature limits. Below are a list of typical applicationsand some of the top customers that use Mark 3 pumps.

Applications

Chemical and petrochemical processing•

Acid transfer•

Brine transfer•

Food and beverage processing•

Hydrocarbon processing•

Pharmaceuticals•

Pulp and paper•

Sea water•

Solvents•

Metal processing•

Water and waste water treatment•

Polymers•

Some detailed applications manuals have been prepared for theMark 3 in some specific processes. The applications include:

Corn Wet Milling and Refining•

Chlor-Alkali Industries•

Mineral Acids Production•

PTA Production•

Titanium Dioxide Production•

These applications manuals are reproduced below.

Section 1 Corn Wet Milling and Refining Applications

Section 2 Chlor-Alkali Industries Applications

Section 3 Mineral Acids Applications

Section 4 PTA Applications

Section 5 Titanium Dioxide

http://www.fpdlit.com/prm/fpd-1073/appBinder_01.pdf














Pumps

Mark 3 Typical Applications






Pumps

Mark 3 Representative Installation Lists

Representative Installation Lists

Top Customers

DuPont•

Dow•

Kerr-McGee•Cargill•

Monsanto•

Solutia•

Merck & Co.•

Eastman Chemical•

Bayer•

Anheuser-Busch•

BASF•

PPG•

Vulcan Materials•

Occidental Che•

BP Amoco•





Pumps

Mark 3 Representative Installation Lists






Pumps

Mark 3 Competitive Analysis

Competitive AnalysisThe Mark 3 offers three distinct features not available with anyother ANSI pump line. These features offer specific, measurablebenefits for the end-user. These features are the power end designand options, the reverse vane impeller, and the SealSentry™

seal chambers. These features were presented and discussed,in detail, in Section 1.

The major competitor of the Mark 3 is the Goulds 3196 ANSI pumpline. Below are some of the weaknesses of the Goulds design:

Only available with an open impeller•

Does not offer a seal chamber with performance equal to the•

Mark 3 FM design. The Goulds Taperbore Plus VPE design islimited to 10% solids and is not available in ductile iron. Inaddition, at low flows the VPE can result in negative sealchamber pressures.Mark 3 Group 2 and 3 shafts are larger in diameter and provide•

more robust deflection resistance which results in longermechanical seal life. In addition, the Mark 3 Group 2 power end

uses one size larger bearings which gives substantially longerbearing life.The Goulds jackscrew impeller adjustment design is slower and•

less accurate than the micrometer adjustment of the Mark 3. Inaddition, the jackscrew design can lead to uneven bearing loadingand reduced bearing life.

Below are some of the negative comments offered by Gouldsabout the Mark 3 pumps and appropriate counter responsesto these comments:

“The reverse vane impeller will clog.” There are a few services•

where this might be of concern such as stringy, fibrous solids.

We can offer an open impeller for those very few occasionswhere this might be an issue. When given a choice, though,customer overwhelmingly select the reverse vane design becauseof the measurable benefits provided.“The reverse vane impeller cannot pass solids like an open•

impeller.” The maximum sphere that will pass through the Mark 3reverse vane and open impellers is shown on the publishedperformance curves (see Section 10). Since we offer bothdesign, we can compare and the data show that the sphere sizeis generally equal for the same size pump with either the reversevane or open impeller. This makes sense in that the open impelleris set very close to the casing and the casing essentially forms afront shroud.“The threads on the bearing carrier of the power end will corrode•

and it will not be possible to set the impeller clearance.” Thethreads are protected, both inboard and outboard, with o-rings.Corrosion of the threads has not been a problem.“The flow modifiers (FM) in the SealSentry are only suitable for•

low solids concentrations.” We have documented performancedata for the FM design in services with up to 60% solids where asingle mechanical seal with no seal flush system performed withno damage to the seal.“The larger oil sump provided with all sizes of the 3196•

provides extended bearing life.” There are two major factorsthat determine bearing life; bearing temperature and purityof the lubricant. Extensive testing has shown that the Mark 3bearing temperatures are well within bearing manufacturers’recommended temperature ranges and the standard Mark 3power end provides the protection required to prevent lubricantcontamination. The upgraded ANSI 3A design comes with a3-year bearing warranty thus indicating our confidence in theenvironment provided for the bearings.

These are the major negative points made by Goulds. The Mark 3has been in use long enough to have established a reputation forlong, reliable performance in the most difficult services. We shouldnot be afraid to compare the performance of the Mark 3 againstthe 3196 in any application.





Pumps

Mark 3 Competitive Analysis








Pumps

Mark 3 Performance Curves

Performance CurvesThe Mark 3 product line is fully supported in PROS+ andperformance curves can be generated and printed there; however,the published performance curves are reproduced here becausethey show additional information:

Impeller eye area•Maximum sphere that will pass through the impeller•

Curve number•

Stuffing box (seal chamber) pressure curves. These curves are•

unique for the Mark 3 as no other ANSI pump manufacturerpublished such curves. With these curves, it is possible toestimate the precise conditions in the seal chamber and predictmechanical seal performance.





Pumps

Mark 3 Lo-Flo™ Performance Curves

PUMP PERFORMANCECHARACTERISTICS





Pumps







Pumps

Mark 3 60 Hz Reverse Vane Impeller Performance Curves






Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps

Mark 3 60 Hz Open Impeller Performance Curves






Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

20.0 cm2

9.5 mm

REVERSE VANE

STD-AA

1K1.5X1-62

2900 (rpm)

7031CV

kW

6

4

2

00 8 16 24 32 40 m3 /h

CONSULT YOUR DURCO REPRESENTATIVE FOR MINIMUM FLOW CONSIDERATION

ft

gpm

50 100 150 200

150

100

50

4

2

6-1/4 in

6 in

5-1/2 in

5 in

.6

4-1/2 in

4 in

3-1/2 in

.81

1.7

40

50

55

55

2.7

%EFF.

NPSH IN METERS

hp

TDH(m)

48

40

32

24

16

8

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm

STUFF BOX HEADABOVE T.S.H.

0

0 50 100

10 20

20

40

300

5

10

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

20.0 cm2

9.5 mm

REVERSE VANE

STD-AA

1K1.5X1-62

1450 (rpm)

7033CV

kW

.6

.4

.2

00 4 8 12 16 20

m3 /hCONSULT YOUR DURCO REPRESENTATIVE FOR MINIMUM FLOW CONSIDERATION

ft

gpm

20 40 60 80 100

30

20

10

.8

.4

6-1/4 in

6 in

5-1/2 in

5 in

4-1/2 in

4 in

3-1/2 in

0.50

0.75

1.02.0

25

3540

45

45

%EFF.

NPSH IN METERS hp

TDH(m)

10

8

6

4

2

0

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 30 60

5 10

4

8

150

1

2

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

31.7 cm2

11.1 mm

REVERSE VANE

STD-AB

1K3X1.5-62

2900 (rpm)

7106CV

kW

6

4

2

0

TDH(m)

40

30

20

10

0

0 10 20 30 40 50m3 /h


ft

gpm

50 100 150 200 250

120

80

40

8

4

6-1/4 in

6 in

5-1/2 in

5 in

4-1/2 in

1 2 34

5

6

50 60

65

68

%EFF.

NPSH IN METERS

65

60

hp

PUMP PERFORMANCE

CHARACTERISTICS

4 in

m

gpm


0

0 150 300

25 50

8

16

750

2

4

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

31.7 cm2

11.1 mm

REVERSE VANE

STD-AB

1K3X1.5-62

1450 (rpm)

7108CV

kW

.75

.5

.25

0

TDH(m)

12

10

8

6

4

2

0 5 10 15 20 25m3 /h


hp

ft

gpm

25 50 75 100 125

30

20

10

1.0

0.5

PUMP PERFORMANCE

CHARACTERISTICS

6-1/4 in

6 in

5-1/2 in

5 in

4-1/2 in

4 in

.2

3040 45

5055

60

65

.4.6

%EFF.

NPSH IN METERS

m

gpm


0

0 50 100

10 20

2

4

300

.5

1

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

38.3 cm2

12.0 mm

REVERSE VANE

STD-N/A

1K3X2-62

2900 (rpm)

7121CV

kW

12

8

4

00 20 40 60 80 100


ft

gpm

100 200 300 400 500

120

80

40

16

8

6-1/4 in

6 in

5-1/2 in

5 in

4-1/2 in

4 in

3-1/2 in

1.5

NPSH IN METERS

%EFF.

2

2.5

3.5

65

75

75

6555

35

TDH(m)

40

32

24

16

8

0

hp

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 250 500

40 80

0

10

120-2

2

0

4

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

38.3 cm2

12.0 mm

REVERSE VANE

STD-NA

1K3X2-62

1450 (rpm)

7123CV

kW

1.5

1.0

0.5

0

TDH(m)

12.5

10

7.5

5

2.5

0

0 10 20 30 40 50 m3 /hCONSULT YOUR DURCO REPRESENTATIVE FOR MINIMUM FLOW CONSIDERATION

hp

ft

gpm

50 100 150 200 250

40

30

20

10

2

1

PUMP PERFORMANCE

CHARACTERISTICS

6-1/4 in

6 in

5-1/2 in

5 in .4

4-1/2 in

4 in

40 50 5560

65

68

65

60

55

50

%EFF.

.6

.8

1.3

NPSH IN METERS

1.7

m

gpm


0

0 100 200

20 40

0

2

60-.5

0

.5

m3 /h

ft






Pumps


04-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

21.5 cm2

13 mm

REVERSE VANE

STD-AA

1K1.5X1-82

2900 (rpm)

7041CV

kW

7.5

5

2.5

0

TDH(m)

100

80

60

40

20

0

0 10 20 30 40 50m3 /h


hp

ft

gpm

50 100 150 200

300

200

100

10

5

PUMP PERFORMANCE

CHARACTERISTICS

8-3/16 in

7-1/2 in

7 in

6 in

5-1/2 in

5 in

4-1/2 in

6-1/2 in

35 40 45 5055

58

%EFF.

61

1.61.2

1 23

NPSH IN METERS

45

50

55

58

m

gpm


0

0 75 150

15 30

40

80

450

10

20

m3 /h

ft






Pumps


04-97DATE

PUMP PERFORMANCE

CHARACTERISTICS

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

21.5 cm2

13 mm

REVERSE VANE

STD-AA

1K1.5X1-82

1450 (rpm)

7043CV

kW

1.2

0.8

0.4

0

TDH(m)

20

16

12

8

4

0


hp

ft

gpm

20 40 60 80 100

60

40

20

1.5

.5

8-3/16 in

7-1/2 in

7 in

6-1/2 in

6 in

5-1/2 in

5 in

4-1/2 in

35 4045

5051

51

%EFF.

1.51.1

1.3NPSH IN METERS

m

gpm


0

0 40 80

10

8

16

200

2

4

m3 /h

ft






Pumps







Pumps







Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

37.4 cm2

13.0 mm

REVERSE VANE

STD-N/A

1K3X1.5-82

2900 (rpm)

7141DV

kW

15

10

5

0

TDH(m)

80

60

40

20

0

0 10 20 30 40 50m3 /h


ft

gpm

50 100 150 200 250

250

200

150

100

50

20

15

10

5

8-3/16 in

7-1/2 in

7 in

6-1/2 in

6 in

5-1/2 in

5 in

4-1/2 in

4 in

40 50 5560

60

%EFF.

2.5

3.3

1.51.0

NPSH IN METERS hp

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 150 300

25 50

0

2

75-.5

0

.5

m3 /h

ft






Pumps


08-96DATE

PUMP PERFORMANCE

CHARACTERISTICS

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

37.4 cm2

13 mm

REVERSE VANE

STD-NA

1K3X1.5-82

1450 (rpm)

7143CV

kW

3

2

1

0

TDH(m)

20

16

12

8

4

0

0 8 16 24 32 40m3 /h


hp

ft

gpm

50 100 150 200

60

40

20

3

1.5

8-3/16 in

7-1/2 in

6-1/2 in

6 in

5-1/2 in

5 in

.8

1.3

NPSH IN METERS

%EFF.4050 55

60

63

63

607 in

.4

m

gpm


0

0 75 150

15 30

0

2

45-.5

0

.5

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

43.9 cm2

13.5 mm

REVERSE VANE

STD-A60

2K3X2-82

2900 (rpm)

8361DV

kW

20

10

0

TDH(m)

70

60

50

40

30

20

10

0

0 20 40 60 80 100m3 /h


hp

ft

gpm

100 200 300 400 500

200

150

100

50

20

10

PUMP PERFORMANCE

CHARACTERISTICS

8-3/16 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

5-1/2 in

5 in

.61

2

3

4

4.5

60

65

70

65

6050

%EFF.

NPSH IN METERS

m

gpm


0

0 150 300

30 60

10

20

900

3

6

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

43.9 cm2

13.5 mm

REVERSE VANE

STD-A60

2K3X2-82

1450 (rpm)

8363DV

kW

3

2

1

0

TDH(m)

20

15

10

5

0

0 10 20 30 40 50m3 /h


hp

ft

gpm

50 100 150 200 250

60

45

30

15

4

2

PUMP PERFORMANCE

CHARACTERISTICS

8-3/16 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

5-1/2 in

5 in

.4.6

.81

1.2

NPSH IN METERS

40 50 60

68

68

%EFF.

60

50

40

m

gpm


0

0 100 200

20 40

4

8

600

1

2

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

80.0 cm2

12.7 mm

REVERSE VANE

STD-A70

2K4X3-82

2900 (rpm)

8371CV

kW

30

20

10

0

TDH(m)

100

80

60

40

20

0


hp

ft

gpm

250 500 750 100

300

200

100

40

20

PUMP PERFORMANCE

CHARACTERISTICS

8-1/2 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

5-1/2 in

5 in

NPSH IN METERS

1.4

50 60 6570

73

70

65

%EFF.

60

50

1.62.0

2.83.3

4.0

m

gpm


0

0 350 700

60 120

8

16

1800

2

4

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

80.0 cm2

12.7 mm

REVERSE VANE

STD-A70

2K4X3-82

1450 (rpm)

8373DV

kW

6

4

2

0

TDH(m)

20

16

12

8

4

0


ft

gpm

100 200 300 400 500

60

40

20

8

4

hp

8-3/16 in

6-1/2 in

7-1/2 in

5-1/2 in

8 in

7 in

6 in

1.5

.75

1.0

NPSH IN METERS

50 60

70

65

50

.5

%EFF.

65

72

70

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 200 400

50

2

4

1000

.5

1

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

38.3 cm2

10.3 mm

REVERSE VANE

STD-A05

2K2X1-10A

2900 (rpm)

8391DV

kW

16

8

0

TDH(m)

120

100

80

60

40

20

0

0 8 16 24 32 40m3 /h


hp

ft

gpm

50 100 150 200

300

200

100

20

10

PUMP PERFORMANCE

CHARACTERISTICS

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

5-1/2 in

5 in

35 4045

48

%EFF.

1.5 10.5

0.751.0

1.5

NPSH IN METERS

m

gpm


0

0 75 150

15 30

10

20

450

3

6

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

38.3 cm2

10.3 mm

REVERSE VANE

STD-A05

2K2X1-10A

1450 (rpm)

8393EV

kW

3

2

1

0

TDH(m)

30

25

20

15

10

5


hp

ft

gpm

25 50 75 100 125

80

60

40

20

3

2

1

PUMP PERFORMANCE

CHARACTERISTICS

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

.4

.5

.8

20 25 3035

40

42

40

%EFF.

35

30

25

NPSH IN METERS

m

gpm


0

0 40 80

10

2

4

200

.5

1

m3 /h

ft






Pumps







Pumps







Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

35.4 cm2

11.9 mm

REVERSE VANE

STD-A50

2K3X1.5-10A

2900 (rpm)

7706CV

kW

30

20

10

0

TDH(m)

125

100

75

50

25

0


hp

ft

gpm

100 200 300 400 500

400

300

200

100

40

20

PUMP PERFORMANCE

CHARACTERISTICS

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

35 45 5055

58

55

50

45

12

3.5

%EFF.

NPSH IN METERS

m

gpm


0

0 150 300

25 50

20

40

750

5

10

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

35.4 cm2

11.9 mm

REVERSE VANE

STD-A50

2K3X1.5-10A

1450 (rpm)

7708CV

kW

6

4

2

0

TDH(m)

30

25

20

15

10

5


hp

ft

gpm

50 100 150 200 250

80

60

40

8

4

PUMP PERFORMANCE

CHARACTERISTICS

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

.4

.6

.8

NPSH IN METERS

35 40 45 5055

55

50

45

40

1

%EFF.

m

gpm


0

0 75 150

15 30

4

8

450

1

2

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

41.3 cm2

13.5 mm

REVERSE VANE

STD-A60

2K3X2-10A

2900 (rpm)

7821BV

kW

30

20

10

0

TDH(m)

125

100

75

50

25

0

0 25 50 75 100 125m3 /h


hp

ft

gpm

200 400 600

400

300

200

100

40

20

PUMP PERFORMANCE

CHARACTERISTICS

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

5060

65

67

65

60

5

12

34

NPSH IN METERS

%EFF.

50

m

gpm


0

0 250 500

40 80

20

40

1200

5

10

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

41.3 cm2

13.5 mm

REVERSE VANE

STD-A60

2K3X2-10A

1450 (rpm)

7823BV

kW

6

4

2

0

TDH(m)

25

20

15

10

5

0

0 20 40 60 80 100m3 /h


hp

ft

gpm

100 200 300 400 500

80

60

40

20

8

4

PUMP PERFORMANCE

CHARACTERISTICS

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

6-1/2 in

6 in

.6

.8

1

1.5

4050

60

65

65

60

50

%EFF.

NPSH IN METERS

m

gpm


0

0 150 300

25 50

8

16

750

2

4

m3 /h

ft






Pumps


03-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

85.2 cm2

16.7 mm

REVERSE VANE

STD-A70

2K4X3-10

2900 (rpm)

7901FV

kW

60

40

20

0

TDH(m)

100

80

60

40

20

0


hp

ft

gpm

250 500 750 1000

300

200

100

80

40

PUMP PERFORMANCE

CHARACTERISTICS

10 in

9 in

8 in

7 in

6 in

50 6070

72

72

%EFF.

70

60

1.52

3

4

NPSH IN METERS

m

gpm


0

0 300 300

60 120

10

20

1800

3

6

m3 /h

ft






Pumps


04-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

85.2 cm2

16.7 mm

REVERSE VANE

STD-A70

2K4X3-10

1450 (rpm)

7903FV

TDH(m)

25

20

15

10

5

0

0 20 40 60 80 100m3 /h


hp

ft

gpm

100 200 300 400 500

80

60

40

20

8

40

10 in

9 in

8 in

7 in

6 in

5060

65

67

65

60

50

2.5

1

1.5

%EFF.

NPSH IN METERS

kW

6

4

2

0

(

)

m

gpm


0

0 250 500

40 80

4

8

1200

1

2

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

85.4 cm2

19.8 mm

REVERSE VANE

STD-A50

2K4X3-10H

1450 (rpm)

7601IV

kW

15

10

5

0

TDH(m)

30

25

20

15

10

5

0

0 25 50 75 100 125m3 /h


ft

gpm

125 250 375 500 625

80

60

40

20

15

10

5

hp

NPSH IN METERS

50 60

60

50

3

2

1

77

70

75

%EFF.

70

8-1/2 in

9 in

9-1/2 in

10 in

6-1/2 in

6 in

7-1/2 in

8 in

7 in

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 300 600

60 120

1

2

1800

.25

.5

m3 /h

ft






Pumps


06-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

126.5 cm2

17.5 mm

REVERSE VANE

STD-A80

2K6X4-10

2900 (rpm)

8381EV

kW

100

50

0

TDH(m)

100

80

60

40

20

0


hp

ft

gpm

250 500 750 1000 1250

300

200

100

120

60

PUMP PERFORMANCE

CHARACTERISTICS

%EFF.

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

2.5 34

5

6

40 50 6065

7072

73

72

70

65

60

NPSH IN METERS

m

gpm


0

0 500 1000

100 200

8

16

3000

2

4

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

126.5 cm2

17.5 mm

REVERSE VANE

STD-A80

2K6X4-10

1450 (rpm)

8383EV

kW

15

10

5

0

TDH(m)

25

20

15

10

5

0

0 50 100 150 200 250 m3 /h


ft

gpm

250 500 750 1000 1250

80

60

40

20

20

10

hp

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

1.00.6 0.8

2.0

3.0

NPSH IN METERS

50

50

6065

70

73

73

%EFF.

70

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 300 600

60 120

2

4

1800

.5

1

m3 /h

ft






Pumps


08-96DATE

PUMP PERFORMANCE

CHARACTERISTICS

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

142 cm2

14.3 mm

REVERSE VANE

STD-A80

2K6X4-10H

1450 (rpm)

8386BV

kW

16

8

0

TDH(m)

24

20

16

12

8

4

0

0 80 160 240 320 400m3 /h


hp

ft

gpm

500 1000 1500 2000

75

50

25

24

12

6-1/2 in

10 in

9-1/2 in

9 in

8-1/2 in

8 in

7-1/2 in

7 in

5070

80

85

85

%EFF.

80

70

1.5

2

3

4.4

NPSH IN METERS

m

gpm


0

0 750 1500

125 250

10

20

3750

3

6

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

48.4 cm2

15.1 mm

REVERSE VANE

STD-A20

2K3X1.5-13

2900 (rpm)

7304GV

kW

60

40

20

0

TDH(m)

200

160

120

80

40

0

0 20 40 60 80 100m3 /h


ft

gpm

100 200 300 400 500

600

400

200

80

40

13 in

12 in

11 in

10 in

9 in

.51

2

3

4

5

40 45 50 5355

55

%EFF.

NPSH IN METERS

hp

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 250 500

40 80

15

30

1200

4

8

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

48.4 cm2

15.1 mm

REVERSE VANE

STD-A20

2K3X1.5-13

1450 (rpm)

7301GV

kW

10

5

0

TDH(m)

50

40

30

20

10

0

0 10 20 30 40 50m3 /h


ft

gpm

50 100 150 200 250

150

100

50

15

10

5

13 in

12 in

11 in

10 in

9 in

1.00.5

0.80

1.20

1.5

50

52

5250

454035

%EFF.

NPSH IN METERS

hp

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 100 200

20 40

4

8

800

1

2

m3 /h

ft






Pumps







Pumps







Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

48.4 cm2

10.3 mm

REVERSE VANE

STD-A30

2K3X2-13

2900 (rpm)

7404HV

kW

120

80

40

0

TDH(m)

200

160

120

80

40

0

0 20 40 60 80 100m3 /h


hp

ft

gpm

100 200 300 400 500

600

400

200

160

80

PUMP PERFORMANCE

CHARACTERISTICS

13 in

12 in

11 in

10 in

9 in

1.2 23

6

40

60

50

66

5

%EFF.

NPSH IN METERS

m

gpm


0

0 250 500

40 80

15

30

1200

4

8

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

48.4 cm2

10.3 mm

REVERSE VANE

STD-A30

2K3X2-13

1450 (rpm)

7401FV

kW

15

10

5

0

TDH(m)

50

40

30

20

10

0

0 20 40 60 80 100m3 /h


ft

gpm

100 200 300 400 500

150

100

50

20

10

13 in

12 in

11 in

10 in

9 in

4050

55

60

60

55

50

.5

.8

1.3

1.7

2.0

NPSH IN METERS

%EFF.

hp

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 250 500

40 80

4

8

1200

1

2

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

98 cm2

17.5 mm

REVERSE VANE

STD-A40

2K4X3-13

2900 (rpm)

7504HV

kW

100

50

0

TDH(m)

140

120

100

80

60

40


hp

ft

gpm

250 500 750 1000

400

300

200

100

120

60

PUMP PERFORMANCE

CHARACTERISTICS

12 in

11 in

11-1/2 in

10 in

10-1/2 in

9 in

9-1/2 in

1.5 2

3

4

5

6

8

6050

7071

71

70

%EFF.

NPSH IN METERS

m

gpm


0

0 400 800

100

8

16

2000

2

4

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

98 cm2

17.5 mm

REVERSE VANE

STD-A40

2K4X3-13

1450 (rpm)

7501EV

kW

24

16

8

0

TDH(m)

48

40

32

24

16

8

0

0 40 80 120 160 200m3 /h


ft

gpm

200 400 600 800 1000

150

125

100

75

50

30

20

10

13 in

12 in

11 in

10 in

9 in

NPSH IN METERS

50 60

70

70

60

%EFF.

.5

1.0

1.4

2.0

3.0

73

hp

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 400 800

100

.4

.8

2000

.1

.2

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

98 cm2

17.5 mm

REVERSE VANE

STD-A40

2K4X3-13HH

1450 (rpm)

7512BV

kW

30

20

10

00 50 100 150 200 250 m3 /h


ft

gpm

250 500 750 1000 1250

160

120

80

40

40

20

13 in

12 in

11 in

10 in

9 in

50 6070

74

74

70

12

3

4

NPSH IN METERS

%EFF.

TDH(m)

50

40

30

20

10

0

hp

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 400 800

100

20

40

2000

6

12

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

187 cm2

26.2 mm

REVERSE VANE

STD-A80

2K6X4-13A

1450 (rpm)

8126EV

kW

30

20

10

0

TDH(m)

50

40

30

20

10

0

0 100 200 300 400 500m3 /h


hp

ft

gpm

500 1000 1500 2000

150

100

50

40

20

PUMP PERFORMANCE

CHARACTERISTICS

13 in

12 in

11 in

10 in

9 in

50 7080

83

83

80

70

1

2

3

4

%EFF.

NPSH IN METERS

83

m

gpm


0

0 750 1500

120 240

0

3

360-.5

.5

0

1

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

187 cm2

26.2 mm

REVERSE VANE

STD-A80

2K6X4-13A

960 (rpm)

8128FV

kW

15

10

5

0

TDH(m)

25

20

15

10

5

0

0 50 100 150 200 250m3 /h


hp

ft

gpm

250 500 750 1000

80

60

40

20

12

6

PUMP PERFORMANCE

CHARACTERISTICS

13 in

12 in

11 in

10 in

9 in

50 7080

82

%EFF.

80

70

1

1.5

NPSH IN METERS

2

2.5

m

gpm


0

0 500 1000

80 160

0

2

240-.5

0

.5

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

292 cm2

41.3 mm

REVERSE VANE

STD-A90

3K8X6-14A

1450 (rpm)

8326GV

kW

60

40

20

0

TDH(m)

50

40

30

20

10

0


hp

ft

gpm

500 1000 1500 2000 250

150

100

50

80

40

PUMP PERFORMANCE

CHARACTERISTICS

14 in

13 in

12 in

11 in

50 7080

%EFF.

85

85

80

70

6

3

3.5

4

NPSH IN METERS

2.5

m

gpm


0

0 1000 2000

200 400

8

16

6000

2

4

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

292 cm2

41.3 mm

REVERSE VANE

STD-A90

3K8X6-14A

960 (rpm)

8328FV

kW

20

10

0

TDH(m)

25

20

15

10

5

0

0 100 200 300 400 500m3 /h


hp

ft

gpm

500 1000 1500 2000 2500

80

60

40

20

30

15

PUMP PERFORMANCE

CHARACTERISTICS

14 in

13 in

12 in

11 in

1

1.5

2

NPSH IN METERS

50 7080

85

85

80

%EFF.

70

m

gpm


0

0 750 1500

150 300

4

8

4500

1

2

m3 /h

ft






Pumps


07-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

410 cm2

38.1 mm

REVERSE VANE

STD-A100

3K10X8-14

1450 (rpm)

8416EV

kW

100

75

50

25

TDH(m)

45

40

35

30

25

20

0 200 400 600 800 1000m3 /h


hp

ft

gpm

1000 2000 3000 4000 5000

140

120

100

80

120

60

PUMP PERFORMANCE

CHARACTERISTICS

14 in

13-1/2 in

13 in

2.53

3.5

4

5

5.7

85

%EFF.

85

80

70

605040

NPSH IN METERS

m

gpm


0

0 2500 5000

400 800

8

16

12000

2

4

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

410 cm2

38.1 mm

REVERSE VANE

STD-A100

3K10X8-14

960 (rpm)

8418CV

kW

30

20

10

0

TDH(m)

25

20

15

10

5

0


ft

gpm

1000 2000 3000 4000 5000

80

60

40

20

40

20

hp

14 in

13 in

13-1/2 in

1.5

2

2.5NPSH IN METERS

6070

86

80

86

%EFF.

80

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 1500 3000

300 600

8

16

9000

2

4

m3 /h

ft






Pumps


03-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

172 cm2

30.2 mm

REVERSE VANE

STD-N/A

3K6X4-16

1450 (rpm)

8411CV

kW

75

50

25

0

TDH(m)

70

60

50

40

30

20

10

0 100 200 300 400 500m3 /h


hp

ft

gpm

500 1000 1500 2000 2500

200

150

100

100

50

PUMP PERFORMANCE

CHARACTERISTICS

16 in

15-1/2 in

15 in

14-1/2 in

14 in

13-1/2 in

13 in

12-1/2 in

12 in

1.21.5

2.0

50 6070

75

75

70

%EFF.

5.0

4.03.0

2.5NPSH IN METERS

78

m

gpm


0

0 750 1500

150 300

20

40

4500

5

10

m3 /h

ft






Pumps


04-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

182 cm2

30.2 mm

REVERSE VANE

STD-N/A

3K6X4-16

960 (rpm)

8413BV

kW

30

20

10

0

TDH(m)

30

25

20

15

10

5

0 50 100 150 200 250m3 /h


hp

ft

gpm

250 500 750 1000 1250

90

60

30

40

20

PUMP PERFORMANCE

CHARACTERISTICS

16 in

15 in

14 in

13 in

12 in

5060

70

80

%EFF.

60

0.81.2

1.6

2

2.4

NPSH IN METERS

m

gpm


0

0 500 1000

100 200

8

16

3000

2

4

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

292 cm2

31.7 mm

REVERSE VANE

STD-A110

3K8X6-16A

1450 (rpm)

8406CV

kW

150

100

50

00 200 400 600 800 1000


ft

gpm

1000 2000 3000 4000 5000

180

120

60

160

80

hp

16 in

15 in

14 in

13 in

12 in

1.80

2.0

2.5

3.0

3.5

NPSH IN METERS

80

7570

6050

81

%EFF.

80

75

70

5.0

TDH(m)

60

50

40

30

20

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 1000 2000

200 400

15

30

6000

4

8

m3 /h

ft






Pumps


01-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

292 cm2

31.7 mm

REVERSE VANE

STD-A110

3K8X6-16A

960 (rpm)

8408CV

kW

30

20

10

0

TDH(m)

30

25

20

15

10

5

0

0 100 200 300 400 500m3 /h


ft

gpm

500 1000 1500 2000 2500

90

60

30

40

20

16 in

15 in

14 in

13 in

12 in

1

1.5

2NPSH IN METERS

50 60 7075

80

81

%EFF.

80

75

70

hp

PUMP PERFORMANCE

CHARACTERISTICS

m

gpm


0

0 1000 2000

200 400

8

16

6000

2

4

m3 /h

ft






Pumps


06-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

410 cm2

39.7 mm

REVERSE VANE

STD-A120

3K10X8-16

1450 (rpm)

8426CV

kW

150

100

50

0

TDH(m)

60

50

40

30

20

10

0 200 400 600 800 1000m3 /h


hp

ft

gpm

1000 2000 3000 4000 5000

180

120

60

200

100

PUMP PERFORMANCE

CHARACTERISTICS

16 in

15 in

14 in

13 in

3.5

4

5.5

5

75

80

83

85

87

87

8583

8075

655545

NPSH IN METERS

%EFF.35

m

gpm


0

0 2500 5000

400 800

15

30

12000

4

8

m3 /h

ft






Pumps


08-96DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

408 cm2

39.7 mm

REVERSE VANE

STD-A120

3K10X8-16

960 (rpm)

8428BV

kW

60

40

20

0

TDH(m)

25

20

15

10

5

0

0 200 400 600 800 1000m3 /h


hp

ft

gpm

1000 2000 3000 4000 5000

80

60

40

20

80

40

PUMP PERFORMANCE

CHARACTERISTICS

16 in

15 in

14 in

13 in

1.5

2

2.5

NPSH IN METERS

%EFF.

50 70

8580

87

85

80

m

gpm


0

0 1500 3000

300 600

8

16

9000

2

4

m3 /h

ft






Pumps


06-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

507 cm2

41.2 mm

REVERSE VANE

STD-A120

3K10X8-16H

1450 (rpm)

8436CV

kW

200

150

100

50

TDH(m)

60

50

40

30

20

10


hp

ft

gpm

2000 4000 6000 8000

160

120

80

40

200

150

100

PUMP PERFORMANCE

CHARACTERISTICS

16 in

15 in

14 in

13 in

4

5

6

7

NPSH IN METERS

%EFF.

6070

80

85

80

70

8

m

gpm


0

0 3000 6000

500 1000

15

30

15000

4

8

m3 /h

ft






Pumps


05-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

507 cm2

41.2 mm

REVERSE VANE

STD-N/A

3K10X8-16H

960 (rpm)

8438CV

kW

60

40

20

0

TDH(m)

25

20

15

10

5

0

0 200 400 600 800 1000m3 /h


hp

ft

gpm

1000 2000 3000 4000 5000

80

60

40

20

80

40

PUMP PERFORMANCE

CHARACTERISTICS

16 in

15 in

14 in

13 in

60 70

80

85

%EFF.

80

70

1.8

2.0

2.2

2.4

2.8

3.2

NPSH IN METERS

m

gpm


0

0 2500 5000

400 800

8

16

12000

2

4

m3 /h

ft






Pumps


06-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

515 cm2

39.7 mm

REVERSE VANE

STD-A120

3K10X8-17

1450 (rpm)

8503EV

kW

150

100

50

0

TDH(m)

60

50

40

30

20

10

0 200 400 600 800 1000m3 /h


hp

ft

gpm

1000 2000 3000 4000 5000

160

120

80

40

150

100

50

PUMP PERFORMANCE

CHARACTERISTICS

17 in

16 in

15 in

14 in

13 in

1.8 2.12.4

3

3.7

4.34.9

65

6

NPSH IN METERS

75

80

82

82

%EFF.

80

7565

554535

m

gpm


0

0 3000 6000

600 1200

6

3

0

-3

9

-1

0

1

2

3

m3 /h

ft






Pumps


06-97DATE

EYE AREA

MAX SPHERE

IMPELLER

DURCO MARK III

SPEED

CURVE NO.

515 cm2

39.7mm

REVERSE VANE

STD-A120

3K10X8-17

960 (rpm)

8502EV

kW

60

40

20

0

TDH(m)

30

25

20

15

10

5


hp

ft

gpm

1000 2000 3000 4000

100

80

60

40

20

50

25

PUMP PERFORMANCE

CHARACTERISTICS

17 in

16 in

15 in

14 in

13 in

2

3

4

35 45 55 6575

80

85

85

%EFF.

NPSH IN METERS

80

75

65

67.3

m

gpm


0

0 2000 4000

400

4

2

0

2

6

800-1

0

1

2

m3 /h

ft






Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps









Pumps









Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps









Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps







Pumps

Mark 3 Pump Selection Program Guidelines

Pump Selection Program Guidelines






Pumps

Mark 3 Pump Selection Program Guidelines






Pumps

Mark 3 Drivers, Mechanical Seals and Accessory Information

Drivers, Mechanical Seals and Accessories






Pumps

Mark 3 Drivers, Mechanical Seals and Accessory Information






Pumps

Mark 3 Optional and Alternative Configurations

Unitized Self-Primer

This pump can draw liquid from sources below the centerline ofthe discharge making it ideal for pumping from sumps and tankcars. The only non-standard part for this pump is the casing.All other parts are standard Mark 3 components. Sources of

information on this pump can be found at:

Section 4 – Product Brochure (Literature No. PS-10-13), pages•

26-27, contains major features and benefits of the Mark 3Unitized Self-Primer.

Section 8 – General Engineering Data has references and links•

to Technical Bulletin (Literature No. P-10-501) regarding theUnitized Self-Primer design.

Performance Curves for the Unitized Self-Primer are shown at•

link: Durco Mark 2 and Mark 3 Self-Priming Pumps – 50 and 60 Cycle Performance Curves, P-12-102. In addition to the standard head-flow curves and seal chamber pressure curves, additionalcurves are included to assist in estimating priming time.

Section 23 – Pricing for Pumps, Modifications, Accessories,•

and Parts has links to the relative price pages for the UnitizedSelf-Primer.

Recessed Impeller

The recessed impeller design pumps with a vortex action thusmaking it suited for handling solids efficiently. The only non-standard components include the casing and impeller. All otherparts are standard. Sources of information on this pump can befound at:


28-29, contains major features and benefits of the Mark 3Recessed Impeller.


to Technical Bulletin (Literature No. P-10-501) regarding theRecessed Impeller design.

Performance Curves for the Recessed Impeller are shown at link:•

Durco Mark 2 and Mark 3 Recessed Impeller Pump Performance Curves, P-19-102.


and Parts has links to the relative price pages for theRecessed Impeller.

Optional and Alternate ConfigurationsThere are four special configurations of the Mark 3 pump: Lo-Flo,Sealmatic, Unitized Self-Primer and Recessed Impeller. Thesespecial configurations use many standard components, reducingparts inventory requirements. A brief description is included below

with links to more detailed information.

Mark 3 Lo-Flo

Standard centrifugal pumps are designed to operate at, or near,a best efficiency point (BEP). In this range of operation, bearingloads and vibration are minimized. However, there are manyapplications requiring low-flow, high-head performance. TheMark 3 Lo-Flo is designed to fill this need. This pump uses onlya special impeller and casing, all other parts are standard Mark 3components. Sources of information on this pump can be found at:


22-23, contains major features and benefits of the Mark 3 Lo-Flo.


to Technical Bulletin (Literature No. P-10-501) regarding theLo-Flo design.

Section 14 – Performance Curves includes curves for the Lo-Flo.•

Section 23 – Pricing for Pumps, Modifications, Accessories, and•

Parts has links to the relative price pages for the Lo-Flo.

Sealmatic

With the Sealmatic design, no mechanical seal is required makingit ideal for hard to seal applications. This pump uses special coversand includes a repeller. All other parts of the pump are standardMark 3 components. Sources of information on this pump can befound at:


24-25, contains major features and benefits of the Mark 3Sealmatic.


to Technical Bulletin (Literature No. P-10-501) regarding theSealmatic design.

Section 14 – Performance Curves are the same as the standard•

design. Repeller curves can be found at: Mark 3 Sealmatic Curves, P-18-102.


and Parts has links to the relative price pages for the Sealmatic.

http://www.flowserve.com/vgnfiles/Files/Literature/FPD/p-12-102-e.pdf













Pumps

Mark 3 Optional and Alternative Configurations






Pumps

Mark 3 Aftermarket and Recommended Spare Parts

Aftermarket and Recommended Spare Parts






Pumps

Mark 3 Aftermarket and Recommended Spare Parts






Pumps

Mark 3 FAQs (Frequently Asked Questions)

FAQs (Frequently Asked Questions)

1. What are the viscosity limits for Mark 3 pumps?Viscosity is a measure of the resistance of a liquid to flow.As viscosity increases, more energy is required to pump the

liquid. PROS performs viscosity corrections when selectingMark 3 pumps; however there are limits as to the maximumviscosity liquid each size pump can handle. These limits are:

• Group 1 – 500 centipoise

• Group 2 – 1,000 centipoise

• Group 3 – 2,000 centipoise

2. What are the standard materials of construction forthe Mark 3?

There is a table in Section 1 that lists the standard materialsof construction for the Mark 3. Published pricing is postedfor these materials plus standard lead times have beenestablished. However, the Mark 3 can be produced in other

alloys on request. Requests should be coordinated throughthe application engineer that supports the local sales efforts.

3. Who are the major competitors for the Mark 3?There are a number of manufacturers of ANSI pumps butthere is only one major competitor and that is ITT-Goulds.Others offering ANSI pumps include Sulzer/Ahlstrom,Peerless/Labour, Dean Brothers, and Blackmer/Chesterton.In addition, there are a few replicators offering ANSI-dimensioned pumps some of which are copies of the Mark 3.

4. Is the Mark 3 fully ANSI compliant?

The Mark 3 is fully compliant with ASME (ANSI) B73.1-2001.

5. Is the Mark 3 compliant with any provisions of API 610?No, there is no compliance of the Mark 3 with API 610.

6. Is the Mark 3 compliant with API 682?API 682 is essentially a mechanical seal specification and the

Mark 3 can be fitted with an API 682, Category 1 mechanical seal.

7. Is the Mark 3 compliant with PIP (Process IndustryPractices) Standard RES P73H-97?After some initial acceptance shortly after its introduction,this standard is not often invoked. There are provisionsthat require some pump modifications for compliance plusthere are some provisions that should be challenged. If thisstandard is invoked, contact should be made with the Mark 3

Pump Design Center (see table in Section 5 showing relevantpersonnel). There are two other relative PIP issues. The pumpdata sheet from Standard RES P73H-97 has been adopted byASME B73.1-2001. Also, there is a PIP Standard RESP002regarding ANSI pump baseplates and the Type E baseplatecomplies with this standard.

8. What determines the minimum recommended flowfor the Mark 3?

There are two relevant minimum flow values: minimumcontinuous flow (MCF) and minimum thermal flow (MTF).

MCF is shown by pumps size in ASME B73.1-2001, Table

5, and is presented as a percentage of best efficiency point(BEP). The parameters that influence MCF levels are vibration,shaft deflection, and bearing life. B73.1 states that pumpscan be reliably operated below the levels shown in Table 5 solong as the requirements for vibration, shaft deflection, andbearing life are met. The published MCF values for the Mark 3(see Section 4 for reference to the Mark 3 values) differ somefrom those published in B73.1 because the critical parameterrequirements are met. It should be noted that MCF relates tocontinuous flow. A pump should not be selected that wouldoperate continuously below this minimum. Infrequent andshort-duration operation below the minimum value can betolerated without measurably impacting pump reliability.

Some of the input energy to a pump is transformed by fluidfriction to heat. As pump operation moves toward zero flow,more of the energy is imparted to the fluid. Some level ofminimum flow is required to avoid damaging the pump. Thisis called MTF and this flow is determined by the temperaturerise above which the fluid being pumped is adversely affected(most notably boiling) or the temperature level achievedadversely affects components of the pump. The minimumflow rate required to remain below a specified temperaturerise can be calculated (see equation below). For most standardMark 3 pumps, MCF is significantly higher than MTF. However,the Lo-Flo design has no MCF value so MTF becomes thecontrolling minimum flow and must be considered.

Q = (5 X BHPo X C

hp) / (∆T X sp ht)

Q = minimum flow rate, in gpm BHPo = non-viscous performance curve HP at shutoff sp ht = specific heat of liquid ∆T = maximum allowable temperature rise, °F Chp = viscous HP correction factor

9. Over what temperature range can the Mark 3 operate?

The Mark 3 can operate in the range of -130°C (-200°F) to370°C (700°F); however, when operating below -29°C (-20°F)or above 149°C (300°F) certain modifications are requiredand other modifications are recommended. See Section 4 forreference to a list of these modifications.

10. Is there a standard corrosion allowance for the Mark 3?The corrosion allowance is at least 3.2 mm (0.12 in). Thisallowance applies to the casing, the rear cover/seal chamber,and the gland.





Pumps


15. How are Mark 3 impellers affixed to the shaft?

All Mark 3 impellers are threaded to the shaft. Rotatingthe pump backwards can cause the impeller to spinforward (off) the shaft and usually causes damage to theimpeller and casing. Some size pump can be fitted with

a special fastener through the eye of the impeller into theshaft to avoid spinning the impeller off the shaft duringreverse rotation. This modification should only be offeredin extreme circumstances. Contact Mark 3 Pump DesignCenter personnel before offering this option. Impellers forthe 2K6X4-10, 3K10X8-16, and 3K10X8-16H have threadedinserts that attached the impeller to the shaft. These insertsare used to provide added strength in the threaded area. Theinserts are put into the impeller before final machining andthey cannot be replaced if ever removed.

16. What is the standard flange configuration for the Mark 3and what options are available?

The standard configuration is Class150 flat-faced flanges.

The standard finish of the flanges is in accordance withASME B16.5. Raised face configurations are available as areClass 300 ratings. Also, special finishes and drillings canbe provided. See Section 4 for further reference to detailsregarding Casing Options.

17. What is a 1J pump?Mark 2, Group 1 pumps had a 1-1/8" diameter shaft throughthe seal chamber area. The Mark 3, Group 1 pump has a1-3/8" diameter shaft in this region. A 1J power end providesall the Mark 3A power end features but with a 1-1/8" diametershaft. This power end was developed so that existing Mark 2hydraulics could be maintained, but with the Mark 3A powerend advantages. In addition to standard Mark 2, Group 1 pumps,

the 1J power end is used with Group 1 Unitized Self-Primingand Recessed Impeller designs.

18. What factors determine the shaft design that should beused with the Mark 3?There are four shaft designs available with the Mark 3: solid,friction welded, composite, and sleeved. Both the solid andfriction welded designs offer the same level of rigidity. Thesedesigns are recommended by Flowserve rather than sleevedshafts because they reduce the harmful effects of deflectionand vibration thus improving pump reliability. Below is a briefdiscussion of each design.

Solid shafts, as the name implies, are comprised of the samematerial end-to-end plus no sleeve is used. Theoretically, a solidshaft can be made from any machineable material; however,cost and mechanical properties must be considered. Solidshafts are available as standard in carbon steel and 316 SS,and are the standard offerings in ductile iron and 316 SS(CF8M) pumps respectively.

Friction welded shafts are constructed from two separatematerials, normally a lower cost, stronger material on the couplingend and a more corrosion resistant alloy on the impeller end.Standard configurations are carbon steel/316 SS (ZH), carbonsteel/Alloy 20 (ZC20), 304 SS/Hastelloy B (EHB) and 304 SS/ Hastelloy C (EHC). The ZC20 shaft is the standard offering forCD4M and D20 (Alloy 20) pumps.

11. What are the solids handling capabilities of Mark 3 pumps?

This is a very broad question involving many factors such asthe size and shape of the solids, the hardness of the solidsand the concentration of the solids. Each of these factors isdiscussed briefly as follows.

The performance curves in Section 10 show the maximumsphere diameter that will pass through the impeller thusdefining the largest solid each pump size can handle. Itshould be noted that the reverse vane impeller design willpass essentially the same size sphere as the open impeller.If the solids are fibrous and stringy, then the open impellershould be selected.

Hardness of the solids is a critical factor since hard particlescan cause significant abrasive damage. To minimize damagefrom hard particles, pump selection is key. The pump shouldbe sized to operate at, or very near, the best efficiency point(BEP). Also, the pumps should be selected to run at as low aspeed as possible. Please note that certain sizes of the Mark 3

line are available in high chrome iron, an extremely hard,abrasion resistant material.

Mark 3 pumps can handle fairly high solids concentrations.Services containing up to 60% solids have been pumped.

Services containing significant levels of solids, particularlyabrasive solids, present serious challenges. Discussionswith pertinent individuals at the Mark 3 Pump Design Center(see table in Section 5) are recommended.

12. Are special tools required to maintain Mark 3 pumps?Standard hand tools are normally adequate for performingroutine maintenance on the Mark 3. To assist in maintainingthese pumps, it is recommended that the Flowserve Mark 3

Tool Kit be used. This tool kit contains an impeller wrenchthat greatly simplifies installation and removal of the impeller.Also, a set of nose cones are included which protect shaftthreads and o-rings during maintenance.

13. Are all Mark 3 casing single volute?No, some of the larger casings have dual volutes due to thehigh radial loads generated. The pump sizes that utilize dualvolutes are: 2K6X4-10, 3K10X8-14, 3K8X6-16A, 3K10X8-16,and 3K10X8-16H.

14. What are the impeller balancing criteria for Mark 3 pumps?B73.1 allows single plane (static) balancing; however, mostMark 3 impellers receive a single plane dynamic balance

while a few receive a two plane dynamic balance. Those sizessatisfying the following parameter are single plane balanced:

(Maximum Outside Diameter) / (Total Width at Periphery) ≥ 6

There are three sizes of Mark 3 impellers that fall outside thisparameter and these are two plane balanced. These threesizes are: 2K6X4-10H, 3K10X8-14, and 3K10X8-16H.

All balancing is performed to ISO DR 1940 Grade 6.3tolerance criteria. Other tolerance levels can be provided.





Pumps


23. What is NPSH?

NPSH is net positive suction head. There are two criticalNPSH values, available NPSH and required NPSH. AvailableNPSH is an indication of the proximity of the liquid beingpumped to its vapor pressure. Required NPSH is indicative

of the reduction in total head as the liquid being pumpedenters the pump. Required NPSH is a characteristic of eachpump size and is determined by testing. Available NPSH is acalculated value and is a characteristic of the piping system.Available NPSH can be calculated as follows:

hsv = hpsa + hss – hfs - hvpa

hsv = available net positive suction head in feet of liquid hpsa = suction surface pressure, in feet of liquid,

absolute, on the surface of the liquid from whichthe pump takes its suction

hss = static suction head, in feet of liquid. hfs = friction head loss, in feet of liquid, between the

liquid surface in the suction tank and the suction

flange of the pump hvpa = vapor pressure of the liquid, at the pumping

temperature, in feet of liquid, absolute

Available NPSH must exceed required NPSH to avoidvaporization of the liquid in the pump. This vaporizationis called cavitation. For dependable pump operation, theavailable NPSH should be 20% or 1.5 m (5 ft) over therequired NPSH, whichever is greater.

24. What is cavitation?Cavitation is name given to the vaporization of the pumpedliquid in the pump. Cavitation is normally accompanied bynoisy operation. The noise is frequently characterized as

corn popping. Cavitation is a serious issue which can reduceperformance and cause serious damage to the pump.

25. What are the torque characteristics of Mark 3 pumps?Figure 11.1 is a typical torque-speed curve for Mark 3 pumps.From this curve, it can be surmised that, in general, the starting torque for any Mark 3 pump is approximately 10% of the fullload torque. One of the inherent advantages of pumps like theMark 3 is that the low starting torque requirements and thelow inertia make them easy to start. Full load torque for theMark 3 can be calculated as follows:

Full Load Torque (lb-ft) = 5252 X (Full Speed HP/Full Speed RPM)

Starting torque is influenced by pump size, mechanical seal

type, and other factors. If an accurate starting torque valueis required, contact the Mark 3 Pump Design Center.

Sometimes an engineering contractor or end-user may want tocalculate various torque limits. In addition to the torque-speedcurve, the WR2 (mass moment of inertia) value for each pumpsize is needed. These values are shown in Table 11.1.

Composite designs are comprised of a carbon steel shaft witha permanently attached (not replaceable) sleeve. This designpermits utilizing a specialty material in the seal chamber areaof the pump economically. There are three options available:carbon steel/high silicon iron (BB77), carbon steel/cobalt alloy

(BBC8) and carbon steel/ceramic (BBC3).

Finally, shafts with replaceable sleeves can be provided.The shaft can be made from one material or friction welded.The sleeve can be almost any castable and/or machineablematerial. This design is typically used in high alloy pumpswhere corrosion resistance is of paramount importance.

19. When should duplex angular contact bearings be used?Many customers specify these bearings because they feelthe increase in reliability is worth the small price adder. Also,these bearings are required with the 13" Lo-Flo pump undercertain operating conditions. To see if these bearings shouldbe specified for other applications, the Suction Pressure

Rating curves for the standard Mark 3 pumps should beconsulted (See Section 4 for the location of these curves).

20. When should greased bearings be used?This is usually a customer preference issue. Greased bearingscan present less hassle and mess than oil bath bearings plussome consider them more foolproof. Greased bearings canbe either regreasable or greased-for-life (double shielded).Flowserve does not recommend sealed bearings because ofthe frictional heat generated by the lip seals.

21. How is specific speed (NS) calculated?The formula for calculating specific speed is:

NS = NQ1/2 / H3/4

NS = specific speed in U.S. units N = rotative speed, in revolutions per minute Q = capacity, at best efficiency point, in gallons per minute H = total head, at best efficiency point, in feet

Specific speed is a dimensionless index number that relatesthe hydraulic performance of a pump to the shape andphysical proportions of its impeller.

22. How is suction specific speed (NSS) calculated?

The formula for calculating suction specific speed is:

NSS = NQ1/2 / hsv3/4

NSS = suction specific speed in U.S. units

N = rotative speed, in revolutions per minute Q = capacity, at best efficiency point, in gallons per minute hsv = net positive suction head required (NPSHr), at best

efficiency point, in feet

Suction specific speed is a dimensionless rating number thatrelates the ability of a pump to operate under conditions oflow available net positive suction head. PROS displays suctionspecific speed for Mark 3 pumps.





Pumps


29. What is curve “droop”, are Mark 3 pumps subject to thisphenomenon, and can it be avoided?

Curve “droop” is the term used to describe the slight fall offin head near shut-off that can be detected during performancetesting. “Droop” is related, in part, to the nature of the test

systems used and, in part, to the design characteristics ofANSI pumps. Designing out “droop” is possible but wouldresult in some sacrifices in performance. Normally, the“droop” exhibited is not an issue because it occurs belowrecommended minimum continuous flow. Mark 3 pumps,in fact all ANSI pumps, are subject to this phenomenon. Itcan be avoided usually by providing an orifice plate on thedischarge of the pump. The issue of “droop” can be importantif a customer’s specification requires a continuously risinghead curve and/or a guaranteed shut-off head value. Whenquoting to such a specification, assistance should be soughtfrom the Mark 3 Pump Design Center to insure that thecorrect pump is selected and any required modifications(e.g., orifice plate) are included.

30. Can noise level certification be provided for the Mark 3?

Specific testing for an order cannot be performed. Typicalsound pressure levels by motor size and speed are referencedin Section 4. For specific sound levels by pump size based onprevious test data, consult with the Mark 3 Pump Design Center.

31. What are the hydrostatic test requirements for the Mark 3?Per B73.1, all casings, rear covers/seal chambers, and jacketsare hydrostatically test at 1.5 times the maximum designpressure at 38°C (100°F) for 10 minutes. This test can becertified. Other testing can be provided (e.g., 30 minute test).

32. What baseplate options are available with the Mark 3?

Five pre-engineered baseplate designs are available:Type A – This is the lowest cost design. It is a formedsteel configuration with carbon steel being the standardmaterial but other materials (e.g., 316 SS) are available.The Type A offers good flatness and rigidity. It is normallyfoundation mounted but limited stress stilt mounting canbe accommodated. It complies with B73.1 dimensions.

Type B – This is a vinyl ester bonded polymer concretedesign and offers many benefits at a modest cost adderover the Type A. This design is very rigid, has excellentvibration dampening properties, and is very corrosionresistance. It can be either foundation or stilt mountedand meets B73.1 dimensions.

Type C – This is a formed metal design with reinforcementenhancements for increased rigidity; in fact, this is the mostrigid standard design. This design can only be stilt mounted.The standard material of construction is carbon steel butstainless steel is available. It also meets B73.1 dimensions.

Type D – This is a reinforced design that offers better rigiditythan the Type A. It can only be foundation mounted. Carbonsteel is the standard material with stainless steel available.It also meets B73.1 dimensions.

26. What is critical speed?

Another pump characteristic that is sometimes requested isthe critical speed. The critical speed is the natural frequencyof lateral vibration of the shaft/impeller assembly. If a pumpis operated at its critical speed, any rotating imbalance would

be in resonance with the natural frequency and the resultingvibration would be many times greater than that occurringat other speeds. Most pump specifications state that a pumpshould not operate continuously between 80-120% of thecritical speed. The critical speeds for Mark 3 pumps are alsoshown in Table 11.1. The maximum operating speeds for allMark 3 pumps are well below 80% of the critical speed.

27. What is the correct direction of rotation of Mark 3 pumps?All Mark 3 pumps turn clockwise when viewed from the motorend. It is absolutely essential that correct motor rotation beassured before starting the pump. Incorrect motor rotationfor even a very short time interval can cause the impellerto unscrew from the shaft and result in significant damage

to the impeller, casing, shaft, and mechanical seal.Another event that can cause incorrect rotation is reverseflow of liquid through the pump. This might occur when apump is shut off and a high column of liquid is present in thedischarge piping. This will not cause the impeller to unscrewfrom the shaft since the torque that produces the reverserotation is applied to the impeller. A counterclockwise torque,viewed from the motor end, applied to the impeller will tendto tighten the impeller to the shaft.

Conversely, if liquid is forced into the pump in the normaldirection (from the suction to the discharge), the pumprotation will be in the correct direction, but the torque appliedto the impeller will tend to unscrew it. This situation should

be avoided.

28. What are the applicable performance test standardsfor the Mark 3?If a performance test is required, B73.1 specifies testingin accordance with HI (Hydraulics Institute) Standard 1.6.There are two test levels in HI 1.6; A or B. The significantdifferences between the two involves the permissible rangeof the head around the specified duty point. Level B allowsa minor negative tolerance on the specified head value whileLevel A does not. Level B should be the default test standardin PROS when sizing and selecting Mark 3 pumps. LevelA should be selected only when required by the customer.Selecting Level A will result in horsepower and efficiency

penalties versus Level B which can be detrimental in acompetitive bid situation.

Other test standards can be invoked such as API 610 andISO 3555. API 610 test standards are similar to HI 1.6 butshould be carefully defined before accepting as part of anorder. ISO 3555 involves a quite different set of procedures.ISO 3555 acceptance requirements can be met but exceptionshould be taken to the actual procedures.





Pumps


Type E – This is a reinforced design with machined mountingpads thus offering excellent rigidity and flatness. It can only befoundation mounted. Carbon steel is the standard material withstainless steel available. This design meets B73.1 dimensionrequirements and complies with the PIP RESP 002 standard.

33. What are the pump volumes for the Mark 3?This information is frequently requested so the temperaturerise in the pump when running against a closed dischargevalve can be estimated. Table 11.2 shows the volumes forthe standard pumps (this is the volume of liquid that anassembled pump with full impeller would hold with blankedflanges) and Table 11.3 shows the unitized self primingdesign (priming volume only and total volume).





Pumps







Pumps

Mark 3 Typical Instructional Manual

Typical User Instructions (formerly IOMs)

Mark 3 ANSI Pump User Instructions

or see Flowserve.com







Pumps

Mark 3 Typical Instructional Manual






Pumps

Mark 3 Submittal Documentation (Software)

Submittal Documentation (Software)






Pumps

Mark 3 Submittal Documentation (Software)






Pumps

Mark 3 Testing Capabilities

Performance Testing






Pumps

Mark 3 Testing Capabilities






Pumps

Mark 3 Pricing for Pumps, Parts and Accessories

Pricing for Pumps, Parts and AccessoriesAll Mark 3 pumps are fully supported in PROS which includespricing. Hard-copy price sheets for the Mark 3 pump line can befound on the FPD Literature On-Demand website. The documentnumber is FPD-1059 and the address is:

Chesapeake Pump and Accessory Pricing, FPD-1059

The following price sheets cover the Mark 3 pumps:P-III• Mark 3 PumpsP-III-Mod• Mark 3 ModificationsP-Shaft• Mark 3 Shaft AddersCF-P-III• Mark 3 Pumps – High AlloyP-III-HICR• Mark 3 – High Chrome PumpsBY-1• Standard Flush PlansBY-2• ANSI PlansBY-3• ANSI 52/53 PlansS-M• Seal Gland AddersS-M• Mounting Charges

P-LF• Mark 3 Lo-Flo PumpsCF-P-LF• Mark 3 Lo-Flo Pumps – High AlloyP-M• Sealmatic OptionP-M-3• Sealmatic Conversion KitsP-M-4• Sealmatic Conversion KitsP-US• Mark 3 Unitized Self Primer PumpsP-US• Mod Mark 3 Unitized Self Primer Pump ModificationsCF-P-US• Mark 3 Unitized Self Primer Pumps – High AlloyP-R• Mark 3 Recessed Impeller PumpsP-ACC-1• Power MonitorR-7• Inpro Bearing IsolatorsCH-1• Coupling Guards and Splash ShieldsCH-2• Woods CouplingsCH-3• Falk/Rexnord Couplings

CH-4• Rexnord CouplingsCH-CF-6• Rexnord Non-spacer CouplingsCH-7• Dodge/Thomas CouplingsCV-2• In-Line CouplingsP-Base Standard• Type A BasesP-Base Stilt• Type A with Stilts BasesP-Base Polybase• Type B BasesP-Base G10P• Type C Stilt BasesP-Base Reinforced• Type D BasesP-Base PIP• Type E BasesP-Base• Horizontal PolyShield BasesP-Base• PolyShield In-Line PolyShield BasesP-PACK• Special PackagingP-PAINT• Special Paint

P-TEST• TestingM-M Motor• Mounting

Discount Schedules, Distributor Multiplierand Special Pricing

Many Mark 3 end-users have some sort of contractual pricingagreement with FPD. For questions regarding contractual pricing,distributor pricing or general pricing, please contact Dave Braner

(see contact information in Section 9.)

Accessory Prices, Technical Information and Drawings

Standard accessories for the Mark 3 include baseplates, couplings,coupling guards and seal flush plans. The price sheets for theseitems are shown in Section 23 plus they are included in PROS.

Technical information is included in Section 8 underEngineering Data.

Sections 6 and 7 include access to cross-section drawings andgeneral arrangement drawings for the standard Mark 3.

http://www.fpdlit.com/pdf/fpd-1059-e.pdf






Pumps

Mark 3 Pricing for Pumps, Parts and Accessories




11/08 1Property of Flowserve PRIVATE AND CONFIDENTIAL


Pumps

Mark 3 Terms and Conditions Rev. 4 January 11, 2008

Terms and Conditions

There is a special lifetime warranty applicable to all Mark 3 pumpspurchased with the ANSI 3A power end option. The Terms andConditions containing this warranty can be viewed at:

Mark 3 Lifetime Warranty Terms and Conditions, FPD-1044

All other Mark 3 configurations are subject to the standard Termsand Conditions which are reproduced below.







Pumps


WORLDWIDE TERMS AND CONDITIONS OF SALE

1. Applicability:

Except for the application of overriding General Terms Agreements previously executed between Buyer and Seller, any purchase order covering the sale of Seller’s equipment or

services (“Order”) shall be governed solely by these Conditions of Sale and other written provisions mutually agreed upon. Any oral understandings are expressly excluded. Seller

shall not be deemed to have waived these Conditions of Sale if it fails to object to provisions appearing on, incorporated by reference in, or attached to Buyer’s Purchase Order

Form which provisions are hereby expressly rejected. Buyers’ silence or acceptance or use of products constitutes its acceptance of these Conditions of Sale. No modification

or addition to these Conditions of Sale shall be effective unless agreed to in writing and signed by an authorized representative of Buyer and Seller. Seller reserves the right to

reject any Order submitted for its acceptance.

2. Definitions:

“Order” means any purchase order covering the sale of Seller’s equipment or services.

“Equipment” means all equipment and parts manufactured by Seller.

“Buyer” means the company who accepted Seller’s offer or is named in the Purchase Order.

“Services” means work, direction of work, technical information or technical consulting and advice or other services furnished by Seller to Buyer and may support such activities

as the installation, testing, alignment, startup, operation, repair and maintenance of the Equipment.

“Seller” means the company named on the offer.

“Suppliers” means any of Seller’s suppliers of material or services for the Equipment or Services, regardless of tier.

3. Delivery:

Delivery of the Equipment hereunder shall be made Ex-works (Incoterms 2000) Seller’s plant. Shipping dates are approximate and are based on prompt receipt of all necessary

information at Seller’s plant. In case of delay in furnishing complete information, dates of shipment may be extended for a reasonable time based on conditions at Seller’s plant.

In the event Seller provides transport services these will be quoted as a lump sum price based on destination and shipping mode.

Seller shall not be liable for delay in delivery due to causes beyond its reasonable control including but not limited to, acts of God, acts of government, acts of Buyer, fires, labor

disputes, boycotts, floods, epidemics, quarantine restr ictions, war, insurrection, riot, civil or military authority, freight embargoes, transportation shortages or delays, unusually

severe weather or inability to obtain necessary labor, materials or manufacturing facilities due to such causes. In the event of any such delay, the date of delivery shall be extended

for a length of time equal to the period of the delay.

In the event Buyer requests a delay in completion and shipment of the Equipment or any part thereof for any reason, the parties shall agree upon any cost and/or scheduling

impact of such delay, with such costs to the account of Buyer. Any delay period beyond thirty (30) days after original scheduled shipment date shall require Buyer to take title

and risk of loss of such Equipment, thereafter to make arrangements for storage of such Equipment with the Seller or other party. Seller’s invoice, which is contractually based

on shipment, shall be issued upon Seller’s readiness to ship the original Equipment.

4. Warranty:

“Nonconformance” means failure to comply with, or failure to operate due to noncompliance with, applicable Seller drawings or having defects in workmanship or material.

Normal wear and tear, erosion, corrosion and the need for regular overhaul and periodic maintenance do not constitute a Nonconformance.

Seller warrants at time of shipment to Buyer its Equipment will comply with applicable Seller drawings and will be free from defects in workmanship and material. Any equipment

and parts supplied by Seller but manufactured by third parties carry the warranty that the manufacturer of such equipment and parts conveyed to Seller which can be passed on

to Buyer. These warranties run to the Buyer, its successors, assigns, and customers. Supplier’s obligations under this warranty shall expire one (1) year from initial startup or

use of the Equipment or eighteen (18) months after shipment, whichever occurs first. Seller warrants that the Services shall be performed in accordance with industry practices.

Seller’s warranty obligation for service work shall expire ninety (90) days from the date of the initial start-up or six (6) months after completion of the service work, whicheveroccurs first.

Buyer must notify Seller in writing during the defects liability period of a Nonconformance and, within 30 calendar days of discovery of the Nonconformance.

Seller’s obligation and Buyer’s sole remedy under this defects liability period is repair or replacement, at Seller’s election, of any Equipment Nonconformance. All Equipment

repaired or replaced will be warranted only for the unexpired portion of the original defects liability period.

Seller agrees to repair or replace Ex-works Seller’s plant any Equipment or part thereof manufactured by Seller which does not conform to the warranty for Equipment. Equipment

claimed to be defective must be returned, freight prepaid and allowed by Buyer and in accordance with Seller’s instructions to the point of manufacture, unless Seller directs

otherwise. Title to and risk of loss of any equipment being repaired shall remain with Buyer at all times.

In connection with the performance of any corrective work, all removal and reinstallation of the Equipment shall be performed by Buyer at its expense. Buyer shall, at its expense,

be responsible for removing, reinstalling, replacing or supplying any equipment, materials or structures which are necessary to provide reasonable access to the Equipment to be

repaired or replaced. Any decontamination or radiation protection necessary in connection with the removal/reinstallation or on-site repair of the Equipment shall be performed

by Buyer without cost to Seller.

Seller will not be liable under this warranty if the Equipment has been exposed or subjected to any (1) maintenance, repair, installation, handling, packaging, transportation,

storage, operation or use which is improper or otherwise not in compliance with Seller’s instructions; (2) alteration, modification or repair by anyone other than Seller or those

specifically authorized by Seller, (3) accident, contamination, foreign object damage, abuse, neglect or negligence after shipment to Buyer; (4) damage caused by failure of a

Seller supplied Product not under warranty or by any hardware or software not supplied by Seller; (5) use of counterfeit or replacement parts that are neither manufactured nor

approved by Seller for use in the Equipment; or (6) Equipment which is normally consumed in operation or which have normal life inherently shorter than the warranty periodincluding, but not limited to, consumables (e.g. flashtubes, lamps, batteries, storage capacitors).

THESE WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, WHETHER WRITTEN, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING BUT

NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, AND FITNESS FOR PARTICULAR PURPOSE.

5. Payment:

All prices are net cash 30 days from date of invoice, unless otherwise stated in Seller’s proposal, quotation, or offer. Should Buyer for any reason default in the payment of the

contract of purchase, Buyer agrees to pay all collection costs, attorney fees and expenses incurred in collecting payment, including interest on the amount due at the maximum

legal rate. All transportation, insurance and similar charges incident to delivery shall be paid by Buyer. Seller shall issue its invoice upon shipment, or upon notice to Buyer that

Seller is ready to ship, whichever is earlier. Depending on the value of the order, Seller may at its sole discretion require progress payments.

If Buyer’s financial condition is or becomes unsatisfactory to Seller, Seller reserves the right to: a) cancel shipment at any time prior to delivery of the Equipment without further

obligation or liability on the Seller’s part (b) or require a letter of credit or other acceptable security before shipment.

continued





Pumps


continued

6. Changes:

Buyer may request modifications as to the amount, scope and/or nature of the Equipment to be supplied by a written change request. Buyer may also request modifications,

including but not limited to drawings, models, instructions, specifications, quantities, method of shipment, packing, place of delivery or delivery dates for the Equipment. If, in

the opinion of Seller, any modification will affect the agreed fixed price and/or time of delivery, Seller will notify Buyer thereof in writing and will not be obligated to per form any

modification unless agreed to by Seller. Buyer shall confirm that such change is authorized and accepted by issuing a Purchase Order revision.

7. Setoff:

All amounts that Buyer owes Seller under an Order shall be due and payable according to the terms of an Order. Buyer is prohibited from, and shall not set off such amounts or

any portion thereof, whether or not liquidated, against sums which Buyer asserts are due it, its parent affiliates, subsidiaries or other divisions or units under other transactions

with Seller, its parent affiliates, subsidiaries or other divisions or units.

8. Cancellation:

Buyer reserves the right to cancel any portion of an Order affected by a default of Seller or any insolvency or suspension of Seller’s operations or any petition filed or proceeding

commenced by or against Seller under any state or federal law relating to bankruptcy, arrangement, reorganization, receivership or assignment for the benefit of creditors.

9. Non-Disclosure and Non-Use of Sellers’ Information:

Buyer agrees that it will not use Seller’s data for the manufacture or procurement of products which are the subject of an Order or any similar products, or cause said products

to be manufactured by, or procured from, any other source or reproduce said data and information or otherwise appropriate them without the written authorization of the Seller.

Buyer agrees that it will not disclose or make available to any third-party any of Seller’s data or other information pertaining to this Order which is proprietary to Seller without

obtaining Seller’s prior written consent.

10. Patent Indemnity:

Except insofar as an Order calls for equipment pursuant to Buyer’s designs, drawings or specifications, Seller agrees to pay the amount of any final judgment against Buyer

resulting from a suit claiming that any commercial equipment manufactured or furnished hereunder, by reason of their manufacture, sale or use, infringes any United States

patent which has issued at date of an Order, and Buyer’s reasonable costs and expenses in defense of such suit if Seller does not undertake the defense thereof, provided Selleris promptly notified of the threat or commencement of such suit and is offered full and exclusive control to conduct the defense or settlement thereof.

Seller’s indemnity shall not apply where infringement would not have occurred from the normal use for which the equipment was designed. Seller’s liability for damages hereunder

is limited to those computed solely on the value of any equipment sold to Buyer. In no event shall Seller be liable for consequential damages or costs applicable thereto. In the

event of any claim that equipment furnished hereunder infringes any United States patent, Seller may at its option and expense (a) procure for Buyer the right to continue using

the product, or (b) replace or modify the product so that it becomes non-infringing, or (c) grant Buyer a credit for such product, less a reasonable depreciation for use, damage,

and obsolescence upon its return to Seller. Buyer agrees to pay all costs and expenses incurred by Seller in its defense and the amount of any judgment against Seller, in any suit

or proceeding against Seller based upon a claim of infringement, resulting solely from the Buyer combining any equipment furnished hereunder with any item not manufactured

or furnished by Seller or from the sale or use of any such combination by Buyer. Seller shall also indemnify Buyer’s customers and agents for such infringement if, and to the

extent that, Buyer has agreed so to indemnify them, but to no greater extent than Seller has indemnified Buyer herein and under the same conditions as set forth herein. In the

event any equipment to be furnished under this Order is to be made in accordance with drawings, samples or manufacturing specifications designated by Buyer and is not the

design of Seller, Buyer agrees to defend, indemnity and hold Seller harmless to the same extent and subject to the same requirements as set forth in Seller’s obligation to Buyer

as above. The above is in lieu of any other indemnity or warranty, express or implied by Seller, with respect to intellectual property (patents, trade secret , mask works, trademarks,

copyrights, or the like).

11. Special Tooling and Data:

Unless otherwise agreed in writing, all material, software, data processes, equipment, facilities and special tooling, which term includes but is not limited to jigs, dies, fixtures,

molds, patterns, special taps, special gages, special test equipment, other special equipment and manufacturing aids and replacements thereof, used in the manufacture of

products covered by an Order shall be and remains the property of Seller. Seller retains all rights, title and interest in drawings, engineering instructions, specifications, and all

other written data, if any, furnished with equipment.

12. Import Permit or License:

In the event an import permit or license is required by Buyer’s or End User’s authorities for the Equipment sold hereunder, performance is subject to Seller’s prior receipt of

evidence satisfactory to Seller that an appropriate import permit or license has been granted. As to any such permit or license Buyer shall advise Seller of the validity, number, date

of issue and whether the expiration date refers to clearance from the port of departure or arrival at the port of destination. Buyer assumes all responsibility for the procurement

thereof and any expenses incurred therein related to any import permit or license. In the event currency exchange controls exist in Buyer’s country, Buyer shall so state.

13. Export License:

Unless otherwise agreed in writing, Buyer shall be responsible for compliance with the export control laws and regulations of the U.S. Government or the jurisdiction where

Seller’s manufacturing facility accepting the Order is located, and when required by such laws and regulations shall obtain export and re-export licenses required for goods,

services and technical data delivered under an Order. Seller shall not be liable to Buyer for any failure to provide goods, services or technical data as a result of any of the following

governmental actions: (1) refusal to grant export or re-export license; (2) cancellation of export or re-export license, or (3) any subsequent interpretation of the export laws and

regulations, after the date of an Order, that limits or has a material adverse effect on the cost of Seller’s performance on an Order. Seller’s performance hereunder is subject to

Seller’s prior receipt of evidence satisfactory to Seller that an appropriate export license has been granted. If Seller assists in obtaining any export license, Buyer shall reimburse

Seller for all expenses.

14. Taxes:

Seller’s price does not include, and Seller is not responsible for, payment of any tax levied for sales, use, excise, value-added, goods and services, business (franchise or privilege)

or any duties, charges or other such taxes. Seller is only responsible for any tax imposed on Seller, by taxing authorities in Seller’s jurisdiction, which are based on Seller’s

revenue, income, net income, net assets, net worth, or capital or any taxes imposed in lieu thereof. Seller accepts sole responsibility and liability for the payment of any and all

contributions or taxes for unemployment insurance, social security payments, or other assessments for those persons performing work for Seller hereunder. If Seller is required

to pay any taxes or other charges that are the responsibility of the Buyer, then Buyer shall promptly reimburse Seller those amounts.

15. Assignment:

Neither party shall assign an Order or any portion thereof without the advance, written consent of the other party, which consent shall not be unreasonably withheld. The non-

assigning party shall not have any obligation to an assignee of the assigning party unless such consent is obtained.





Pumps


16. Waiver:

Failure by Seller to assert all or any of its rights upon any breach of an Order shall not be deemed a waiver of such rights either with respect to such breach or any subsequent

breach, nor shall any waiver be implied from the acceptance of any payment of service. No waiver of any right shall extend to or affect any other right Seller may possess, nor

shall such waiver extend to any subsequent similar or dissimilar breach.

17. Severability:

If any portion of these Conditions of Sale is determined to be illegal, invalid, or unenforceable, for any reason, then such provision shall be deemed stricken for purposes of the

dispute in question and all other provisions shall remain in full force and effect.

18. Disputes:

Except as otherwise specifically agreed in writing by Buyer and Seller, any dispute relating to an Order placed by a Buyer incorporated in the United States which is not resolved

by the parties shall be adjudicated by a court of competent jurisdiction in the state of Texas. For Orders placed by a Buyer incorporated outside the United States, the parties shall

resort to binding arbitration under mutually agreed procedures.

19. Applicable Law:

This Agreement shall be interpreted in accordance with the laws of the jurisdiction in which the Seller’s facility accepting the Order hereunder is located, exclusive of any choice

of law provisions. The Seller and Buyer expressly agree to exclude from this Agreement the United Nations Convention on Contracts for the International Sale of Goods, 1980,

and any successor thereto.

20. Limitation of Liability:

The remedies set forth herein are exclusive, and the total liability of the Seller with respect to this Contract, or any breach thereof, whether based on contract, warranty, tort

(including negligence), indemnity, strict liability or otherwise, shall not exceed the Contract Price of the specific equipment or service which gives rise to the claim except in

the clause entitled “Patent Indemnity.” IN NO EVENT, WHETHER ARISING BEFORE OR AFTER COMPLETION OF ITS OBLIGATIONS UNDER THE CONTRACT, SHALL SELLER

BE LIABLE FOR SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PENAL DAMAGES OF ANY KIND (INCLUDING BUT NOT LIMITED TO LOSS OF USE, REVENUE OR PROFITS,

INVENTORY OR USE CHARGES, COST OF CAPITAL, OR CLAIMS OF CUSTOMERS) INCURRED BY BUYER OR ANY THIRD PARTY.

21. Translations; Governing Language:

English shall be the legal language of this Agreement, and all parties waive any right to use and/or rely upon any other language, translation or interpretation. The parties

specifically agree that in the case of any inconsistencies or interpretation disputes, the English language version shall control.

22. Entire Agreement:

The contract of purchase, consisting of these terms and conditions, Seller’s quotation and Buyer’s order if accepted in writing by Seller, constitutes the entire agreement between

Buyer and Seller. All other previous and collateral agreements (including letters of intent or purchase orders issued by Buyer), representations, warranties, promises and

conditions relating to the subject matter hereof are superseded by the contract of purchase. Any understanding, promise, representation, warranty or condition not incorporated

in the contract of purchase shall not be binding on either party.



M

A R K 3

A N S I C H E MI C A L P R O C E S S P U

MP

P r o d u c t R e f e r e n c e M a n u a l

Documents

Durco Manual