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Val-Matic’s quality of design and meticulousworkmanship has set the standards by whichall others are measured. Quality design fea-tures such as the Ener•G® Ball Valve with itsenergy efficient design, fusion bonded epoxyand adjustable resilient seating....Cam-Centric® Plug Valves have more requestedfeatures than any other eccentric plugvalve....American-BFV® Butterfly Valvesinclude a field replaceable seat without theneed for special tools....Tilted Disc® CheckValves with high strength and wear resistantaluminum bronze trim as standard....SilentCheck Valves featuring combinedresilient/metal-to-metal seating....Sure SealFoot Valves provided with a heavy duty stain-less steel screened inlet....Swing-Flex® andSurgebuster® Check Valves designed withan unrestricted full flow area....Dual Disc®
Check Valves utilizing stabilized compo-nents to provide extended life....Air Release,Air/Vacuum and Combination Air Valvesprovided standard with Type 316 stainlesssteel trim....VaultSafe® family of productsincludes the FloodSafe® Inflow Preventer,FrostSafe® two-way damper and theVentSafe® vent pipe security cage. TheQuadroSphere® Trunnion Ball Valve fea-tures a unique ball design with recessedsurfaces creating additional flow paths toprovide a self-cleaning action and reducedwear and torque.
Val-Matic is totally committed to providing thehighest quality valves and outstanding serviceto our customers. Complete customer satisfac-tion is our goal.
Make the Change to Quality!
Specify
Val-Matic Valve and Manufacturing Corp.905 Riverside Drive, Elmhurst, IL 60126
Phone: 630-941-7600 Fax: 630-941-8042www.valmatic.com
Copyright © 2016 Val-Matic Valve & Mfg. Corp.ISO 9001:2008 certified company 2/16
Bulletin 9000
A. Energy Efficient BodyUltra low headloss is the result ofstreamlined body contouring and 140%flow area through the body seat area.
B. Contoured DiscThe contoured disc provides ultra-lowheadloss and energy savings. Ahydrodynamically balanced designprovides lift and stabilization for variableconditions, minimum resistance to flow,and excellent flow characteristics.Contoured disc provides minimumheadloss and energy savings. The disccounteraction and short 40° disc strokeresults in quick closure minimizingreverse flow and surge potential.
C. Pivot Pins and BushingsMaximum strength is achieved byutilizing large diameter pins andbushings constructed of high tensilealuminum bronze material. Thesematerials provide superior wear andgall resistance as a result of their high
Brinnell Hardness (BHN) and selecteddifference in hardness between matingparts.
D. Triple-Offset Seating Geometry
Leak tight seating and long life areachieved at all working pressures byutilizing triple-offset seating geometrywhich provides excellent sealing andlow wear characteristics. The offsetsallow the disc edge to lift off the seatduring opening without sliding orbinding.
E. Disc Position IndicatorDirect connection provides preciseindication of the disc position at alltimes. Standard on sizes 6” and larger.
F. Inspection PortsThe ports allow access to the upstreamand downstream sides of the seat forsystem maintenance and serve asmounting pads for optional dashpots.
Inspection port covers are contouredto be flush with body interior tominimize turbulence.
G. Surge ControlBottom Mounted Oil Dashpots controlfinal stage of closing to reduce slam-ming associated with systems havingrapid flow reversal characteristics. TopMounted Oil Dashpots are directlyconnected to the disc and provide fullopen and close control of the valvedisc to further reduce the potential forsurges and water hammer.
H. Offset PivotThe offset pivot counteraction dividesthe disc by a one-third/two-third pro-portion which reduces slamming byproviding a self-cushioning effect.
High Performance Features
F
D
2
Bottom Mounted OilDashpot
Top Mounted OilDashpot
C
FA
B E
GSurge Control
H
3
Applications
The Tilted Disc Check Valve is thepremier check valve in the Val-Matic family. Itoffers unrivaled versatility, reliability, and asignificant cost savings over the life of thevalve. While some valves are ideally suited toa specific application or orientation, the TiltedDisc Check Valve is preferred in any number ofinstallation configurations and a wide rangeof media such as raw water, cooling water,treated water and wastewater effluent.
In single pump systems or systems where onlyone pump is operating at a time, Tilted DiscCheck Valves are commonly used with bothcentrifugal and turbine pumps where flowrates are in the range of 4-20 ft/sec andpressures up to 400 PSI.
For pumping systems with multiple pumps,surge considerations, and high capacity, TiltedDisc Check Valves with oil dashpots are ideal.Depending on the system pressure, multiplepumps can cause a rapid flow reversal uponsystem shut-down and the flow rate can varyconstantly. The Tilted Disc Check Valve isoffered with optional top or bottom mountedoil dashpots to control disc closure in multiplepump systems even after a power failure.
In closed surge tank applications, it is criticalto have a check valve close rapidly to preventreverse flow through the pump after pumpstoppage. The Tilted Disc Check Valve withbottom mounted dashpot is the ideal solutionin this application; it allows the valve to closerapidly and cushion the last 10% of travelwithout the need for an external powersource.
Val-Matic Tilted Disc Check Valves are usedworldwide to offer superior service andfeatures in any number of applications andenvironments. Further information on specificapplication parameters and the benefits of theTilted Disc Check Valve are available online atwww.valmatic.com.
Tilted Disc Check Valvewith Well Service AirValve on Vertical TurbinePump.
Tilted Disc Check Valvewith Top Mounted OilDashpot.
Tilted Disc Check Valve onDischarge of CentrifugalPump.
Tilted Disc Check Valve withBottom Mounted Oil Dashpot.
4
Features & BenefitsThe Val-Matic Tilted Disc® Check Valve provides energyefficient operation while easily handling the mostsevere and demanding applications with features suchas non-slam closure, wear resistance, leak tight seating,and surge control. This high performance check valveexcels in any number of operating conditions and hasthe added benefit of extremely low headlosscharacteristics.
Energy Efficiency - Cost SavingsThe Tilted Disc Check Valve conserves energy andprovides the lowest operating cost, because it providesthe lowest pressure loss characteristics of any checkvalve available today. Ultra-low headloss is the result ofstreamlined body contouring and a hydrodynamicallydesigned disc, (Figure 1) in combination with a 140%flow area through the body seat. The energy savingsrealized by using a 30” Tilted Disc Check Valve insteadof a conventional swing check valve may result in a 40year energy cost savings of $189,232 (See page 10).
Non-Slam Closing - System ProtectionThe non-slam closing characteristics of the Tilted DiscCheck Valve are achieved by utilizing a short discstroke, unique disc counteraction, and fixed pivot pinswithout stem packing. The short disc stroke, resultingfrom the angled seat design, is only 40º as compared tothe approximate 80º to 90º stroke found in aconventional swing check valve (Figure 2). This shortstroke reduces the closing time of the valve disc. Thereduced closing time minimizes flow reversal and waterhammer normally associated with the sudden stoppingof reverse flow.
The disc counteraction is the result of an offset pivot,which divides the disc into approximately a one-third/two-thirds proportion (Figure 3). This allows thetwo-thirds of flow that passes below the pivot to becounteracted by the one-third that passes above thepivot. This counteraction reduces slamming byproviding a self-cushioning effect not found inconventional swing check valves.
Finally, while conventional swing check valves haverotating stems with packing, the Tilted Disc CheckValve’s disc rotates freely on fixed pins. This provideslow inertia and friction to accelerate disc closure.
High Performance Triple Offset SeatingLeak tight seating and long life are achieved byutilizing triple offset seating geometry. The disc pivotis offset from both the face of the seat (1) and thecenterline of the seat (2). These offsets, together withthe inclined offset of the conical seat (3), provide non-binding, self-releasing seating (Figure 4). The offsetsallow the disc edge to lift off the seat during openingwithout sliding or binding (Figure 5).
Figure 1
80° to 90 °Stroke
1/3
2/3
Figure 3
40°Stroke
Figure 2
Pivot
1
2
3
Figure 4
Figure 5
Features & BenefitsWear Resistance - Long LifeExtended valve life is the result of excellent wearresistance through advanced features including discstabilization, triple offset seating, and a meticulousselection of materials of construction for matingsurfaces. Different grades of aluminum bronze are usedfor the disc edge and seat and the pivot pins andbushings to provide a significant difference in hardness,thereby reducing wear and galling. The hydrodynamicdesign of the disc shape provides lift and discstabilization during flow (See Figure 1). Tests conductedby an independent laboratory showed the disc to beextremely stable during both low and high flowconditions, thereby minimizing wear associated withdisc flutter.
Proof of Design TestingTo demonstrate the excellent seating and wearresistant qualities of the Tilted Disc Check Valve, anextensive full-scale cycle test was conducted andwitnessed by an independent engineering consultingfirm. After more than 100,000 cycles, the Val-MaticTilted Disc Check Valve had less than 10% of theallowable leakage for new valves as called for in thetesting sections of AWWA and MSS standards.
Surge ControlThe dashpot configurations include high pressure oilcylinders and full rated disc connections. With oildashpots, the disc is precisely controlled using flowcontrol valves to regulate the flow of oil out of thecylinder, as opposed to an air cushion which onlyproduces a minimal dampening effect due to thecompressibility of air.
To select the proper valve configuration, several criteriamust be considered. The number of pumps and thestatic head will affect how rapidly the water columnwill reverse when a pump is stopped. The type of pumpcontrol will affect the required closing characteristicsof the valve. Typical types of control include on-off,soft-start, variable speed, and electrically operatedcontrol valves. The length of the piping system is usedto estimate surges from changes in flow velocity. Thetype of surge relief system dictates the required closingtime for the valve. Surge tanks require a quick-closingvalve to prevent the loss of stored water back throughthe pump. The criteria listed above are used to selectthe best valve configuration as follows:
Base ValveThe base valve will provide non-slam closure in lowservice pumping applications. Base valves are typicallyused when the static head is less than 100 feet in singleor multiple pump application. A common applicationis the filter backwash pumps in a water treatmentplant.
On very long systems, a power operated control valveis sometimes used. The control valve is electrically wiredto the pump control and is programmed to slowly openand close to gradually change the flow rate in thesystem over a 30-300 second period. However, after apower outage, the control valve may not be capable ofclosing rapidly enough to prevent back spinning of thepump or loss of water from a surge tank. In these cases,a Tilted Disc Check Valve is often installed downstreamof the control valve (See Base Valve Application Figure).
Bottom Mounted Oil DashpotDashpots are used on high service pumpingapplications where there is a propensity for rapid flowreversal. The dashpot consists of a hydraulic cylinderand snubber rod which contacts the disc during closing.The dashpot controls the last 10% of valve closure toprevent slamming of the disc and reduce waterhammer.
The valve is effective on shorter length systems withstatic heads up to the valve rating. The dashpot is alsoused on longer systems where rapid flow reversaloccurs due to the use of surge tanks or in multiplepump systems.
Top Mounted Oil DashpotThe top mounted oil dashpot controls both the fullopening and full closing stroke of the valve. Also, thelast 10% of travel of valve closure is independentlycontrolled by an adjustable hydraulic cylinder cushion.With the top mounted oil dashpot, the disc ismechanically linked to a hydraulic cylinder and linkageis designed to withstand the full thrust of the disc whensubjected to full system pressure.
Valves equipped with top mounted oil dashpots havebeen used in extreme service applications up to the fullflow and pressure rating of the valve. When there isinsufficient space to provide a straight run of pipebetween the pump and the valve, the top mounteddashpot will control the disc movement and prolongthe life of the valve.
5
Base Valve Application
6
Principle of OperationBottom Mounted Oil Dashpot
Bottom Mounted Oil Dashpots (BMOD) reduce the waterhammer potential associated with systems having rapid flowreversal characteristics. These critical conditions are normallyfound in piping systems which have high shut-off heads,and/or use surge tanks. BMOD’s are not directly connected tothe disc, allowing the valve disc to open freely withoutrestriction and close freely for 90% of its travel. During theremainder of its travel, the disc will contact the dashpotsnubber rod. Once contact is made, the final 10% of discmovement is cushioned to an adjustable rate best suited forthe application.
The BMOD is a self-contained oil operated system which hasan air gap between the system media and the dashpotcylinder. This air gap prevents any possibility of thepressurized hydraulic fluid from entering the valve housingand contaminating the system media. The BMOD is installedin the bottom inspection port of the Tilted Disc Check Valveand is available on valve sizes 6” and larger. When necessary,the unit can also be field installed.
The last 10% of closing of the check valve can be controlled by an optional hydraulic dashpot cylinder to preventslamming where rapid flow reversals are expected. The cylinder rod pushes against a snubber rod, which in turnmakes contact with the valve disc. Both sides of the hydraulic cylinder are connected to a pressurized oilaccumulator, which is held at the maximum line pressure plus 50 psi. Since the cylinder piston has a greater pressurearea opposite the rod end, the air pressure in the accumulator will tend to extend the rod past the seat to controlthe last 10% of disc closure. The opening spring is also designed to extend the rod in case air pressure is lost.
Opening Stroke:When the water system pump is started, the waterpressure will force the check valve disc open. The airpressure in the accumulator and the spring will extendthe cylinder and snubber rod into the valve port.
Closing Stroke:When the water system pump is stopped, the weight ofthe disc and reverse flow of water will force the checkvalve disc closed, thereby striking the snubber rod. Thesnubber rod will push on the cylinder rod in thedirection shown and force oil through the adjustableflow control valve. The flow control valve will controlthe speed of closure for the last 10% of valve travel intypically 1 to 5 seconds.
FLOW
SNUBBER ROD
AIR GAP
HYDRAULIC CYLINDER
01 9 82OPEN
AIR
OIL
OIL
PISTON
OIL FILL
PRESSURIZEDOIL ACCUMULATOR AIR FILL
FLOW CONTROLVALVE
CONTROLLEDFLOW
CLO
SE
SNUBBER ROD
SPRING RETAINER
OPENING SPRING
CYLINDER ROD
DASHPOT SPACER
HYDRAULIC DASHPOTCYLINDER
Sequence of Operation
7
Top Mounted Oil Dashpot
The Top Mounted Oil Dashpot (TMOD) is directlyconnected to the disc and provides full control of the valvedisc to further reduce the potential for surges and waterhammer. The unit provides single stage adjustable speedcontrol of the disc’s travel to the open position, therebyreducing system pressure surges upon pump start-up. Twostage control is provided during valve closure, reducingthe water hammer and surges associated with rapid flowreversal systems. The first stage controls 90% of the discclosure, while the second stage controls the final, critical10% of closure. All controls are independent of each otherand can be field adjusted to best suit the application. Forexample, the first stage of closing can be at a slower ratethan the opening rate, with the final 10% of closure at aneven slower rate.
Tilted Disc Check Valves with dashpots are not intended toreplace system surge control equipment, but rather tofurther minimize the slamming and water hammerassociated with conventional swing check valves. TheTMOD is a self-contained oil operated system that has anair gap spacer between the system media and dashpot.The air gap prevents any possibility of the hydraulic fluidfrom entering the system and contaminating the linemedia. TMOD’s are available for all valve sizes 6” andlarger. Val-Matic’s Exclusive Quick Change Coupling isprovided to facilitate removal of the cylinder should it benecessary without removal of the valve from the line.
The opening and closing of the check valve can be controlled by an optional hydraulic dashpot cylinder to reducevalve slamming and control surges. The cylinder rod extends out the bottom of the cylinder and is connected to thedisc of the check valve. When the check valve disc is opened or closed by the forces of the flowing water in thepipeline, the cylinder rod is stroked in the dashpot cylinder in two stages. In the first stage, two flow control valvesare set to independently control the opening and closing times, typically 5 to 30 seconds. In the second stage, acylinder hydraulic cushion will control the last 10% of closure in 1 to 5 seconds.
Opening Stroke:When the water system pump is started, the watercolumn will force the check valve disc open, therebypushing the cylinder rod upward. The oil over thecylinder piston will become pressurized and flowthrough the open flow control valve and into thepressurized oil accumulator typically in 5-30 sec. Oilwill also be drawn into the lower portion of thecylinder through the check valve portion of theclose flow control valve and the vented oilaccumulator.
Closing Stroke:When the water system pump is stopped, theweight of the disc and reverse flow of the water willforce the check valve disc closed, thereby pulling the cylinder rod down. The oil under the cylinder piston will becomepressurized and flow through the close flow control valve and into the vented oil accumulator typically in 5-30 sec.Oil will also flow into the top of the cylinder from the pressurized oil accumulator through the check portion of theopen flow control valve. The pressurized oil accumulator is maintained at 20% of the water line pressure to assist invalve closure.
Final 10% of Closure:During the last 10% of closure, the larger diameter portion of the cylinder rod enters a cushion chamber in thelower head of the dashpot cylinder. The speed of closure during the last 10% of closure can be controlled furtherusing the cushion control adjustment screw located on the cylinder head, typically 1 to 5 seconds.
01 9 82OPEN
01 9 82OPEN
OIL
AIR
OIL
PISTON
CUSHIONCONTROL
HYDRAULICDASHPOTCYLINDER
CLOSEFLOW CONTROL
VALVE
OPENFLOW CONTROL
VALVE
OIL
AIR
OIL FILL
OIL FILL
AIR FILL
PRESSURIZEDOIL ACCUMULATOR
VENTED OILACCUMULATOR
CLOSE
CONTROLLEDFLOW
CONTROLLEDFLOW
CYLINDER ROD
FLOW
COUPLINGRETAINER
RETAINERSCREW
COUPLINGHALF
COUPLINGHALF
CONNECTINGROD
Sequence of Operation
Principle of OperationVal-Matic’s Exclusive
Quick Change Coupling
8
Application Recommendation
0
0
100
200
≥300
≥50004000300020001000
STATICHEAD(FEET)
LENGTH OF PIPELINE (FEET)
LENGTH OF PIPELINE (METERS)
1525914305
STATICPRESSURE
(BAR)
3
6
9
BOTTOMDASHPOT
TOP DASHPOTW/RELIEF VALVE
BASEVALVE
TOP DASHPOT
OR
BOTTOM DASHPOTW/RELIEF VALVE OR
W/SURGE TANK
TOP DASHPOTW/RELIEF VALVE
OR
BOTTOM DASHPOTW/SURGE TANK ORW/CONTROL VALVE
The application graph illustrates the range of use for three valve configurations: 1) base valve, 2) bottom mountedoil dashpot, and 3) top mounted oil dashpot. For example, on a 2,500 ft. long water transmission main operatingat 150 ft. of head, a Tilted Disc Check Valve with a top mounted oil dashpot would be selected. Or, if a surge reliefsystem is provided, then the bottom mounted oil dashpot configuration may be used.
RECOMMENDATION FOR APPLICATION OF VAL-MATIC TILTED DISC® CHECK VALVES
TYPE OF INSTALLATION LENGTH STATIC HEAD SURGE RELIEF SYSTEM RECOMMENDED CHECK VALVE
Single Pump 0-1000 ft. 0-100 ft. NONE Base Valve
Multiple Pump 0-1000 ft. 0-100 ft. NONE Base Valve
Single/Multiple Pump 0-1000 ft. > 100 ft. NONE Valve w/BMOD
Single/Multiple Pump 1000-3000 ft. 0-200 ft. NONE Valve w/TMOD
Single/Multiple Pump 1000-3000 ft. 0-200 ft. Relief Valve/Surge Tank Valve w/BMOD
Single/Multiple Pump 1000-3000 ft. > 200 ft. Relief Valve Valve w/TMOD
Single Pump > 3000 ft. > 50 ft. Relief Valve Valve w/TMOD
Single Pump >3000 ft. > 50 ft. Surge Tank/Control Valve Valve w/BMOD
9
AssyNo. Component Standard Optional
1
Body3” - 10”
Cast Iron ASTM A126,Class B
Ductile Iron,Carbon Steel
Body12” - 60”
Cast Iron ASTM A126,Class B
Ductile Iron,Carbon Steel
2
Disc3” - 10”
Aluminum Bronze ASTM B148, Alloy
C954000Stainless Steel
Disc12”
Ductile Iron ASTMA536 Grade 65-45-12 Carbon Steel
Disc14” - 60”
Cast Iron ASTM A126,Class B
Ductile Iron,Carbon Steel
3
Disc Ring3” - 10” NA NA
Disc Ring12” - 60”
Aluminum BronzeASTM B271, Alloy
C95500Stainless Steel
4 Body O-ring Buna-N ASTM D2000 EPDM
Materials of Construction
AssyNo. Component Standard Optional
5
Seat Ring3” - 10”
Aluminum BronzeASTM B271, Alloy
C95500Stainless Steel
Seat Ring12” - 60”
Aluminum BronzeASTM B271, Alloy
C95400Stainless Steel
6 Inspection HoleCover
Cast Iron ASTM A126,Class B
Ductile Iron, Carbon Steel
7 Pivot PinAluminum BronzeASTM B505, Alloy
C95500Stainless Steel
8
Bushing3” - 10” NA NA
Bushing12” - 60”
Aluminum BronzeASTM B271, Alloy
C95400Stainless Steel
9 Bolts Alloy Steel Stainless Steel
Pressure Ratings
MAXIMUM NON-SHOCK PRESSURE - PSI (BAR)
Temperature
Series 9800 Series 9700 Series 9600
Class 125 Class 300** Class 150**
Cast Iron Ductile Iron Ductile Iron
3”-12” 14”-24” 30”-60” 3”-12” 14”-24” 30”-48” 3”-60”
80-300mm 350-600mm 800-1500mm 80-300mm 350-600mm 800-1200mm 80-1500mm
100°F 200(13.8)
150(10.3)
150(10.3)
400(27.6)
300(20.7)
300(20.7)
285(19.7)
150°F 270(18.6)
200°F 190(13.1)
135(9.3)
115(7.9)
370(25.5)
280(19.3)
250(17.2)
260(17.9)
250°F * * * 355(24.5)
270(18.6)
225(15.5)
250(17.2)
Hydrostatic Test Pressure
300(20.7)
230(15.9)
230(15.9)
600(41.4)
450(31.0)
450(31.0)
450(31.0)
The Val-Matic Tilted Disc® Check Valve is offered in three different flange classes: 125, 150 and 250/300. This chartindicates the maximum non-shock pressures for each flange class.
NOTE: The Ductile Iron 9600 series, Class 150 is rated for 285 PSI and can be bolted directly to flanges with 150 or125 ANSI class drilling.
*For service above 200°F use Series 9700 or 9600.**All Ductile Iron flanges are flat faced.
1
2
5 6
9
7
3
4
8
(CUBIC MR
5678
10
600
500
400
300
200
100
807060504030
206”
4”3”®
METERS PER HOU
F
500
0
4,00
0
3,00
0
2,00
0
1,00
0
800
700
600
FEFE0 FEET/SECONDE T/VEL
T/SECLT/S
ELS
16”12”
1814”10”
8”
UR)
4000
0
30,000
20,000
10,000
8,00
07,00
06,00
05,00
0
4
4230”20”
36”24”8”
TER
)AAT
WERS
OF
3
2
1.8.7.6.5
.4
.3
.2
100,00
0
80,000
70,000
60,000
50,000
40,000
25
20
E
48”
54”2”
60”NG
ETER
AATW
OF
TT N
FE
E
E
5.6.7.8
1
2
3
4
5 FEE
0 FEET/SECO
15 FEETLO
EVELOE
N
E
10 FEET/SECONDELOCITY
E
S
T/SECVELOCIT
/SECOOC
C/SECOELOCI
ING
RAN
SIZING
RAN
GE
REC
OMM
END
EM
NG
R
REC
OMM
END
ED
ECOMM
END
E
SIZING
RAN
GE
ME A
M G
ECOMM
END
E
SIZING
RAN
GE
O
15
ON
ON
EEE
CONDLOCITY
C N
ECOECVELOCITYECEC
CIT
OT/SECONDOCITYSECOOCITY
T/SECOOC/SECOOCIT
D
ELOC
HEAD
LOSS
I
N
F
.1
.2
.3
.4
.5
.08
.07
FEET/SECON
FEET/SECON4 FEET/SECONDELOCITY
T SET/SECO/SECOVELOCIT/SECOLOC/SECOELOCIT
F5 FEET/SECONDVELOCITY
ET/SECOSECOVELOCITYSECO
OCOSECELOCO
SIZING
RAN
GE
U
NRA
5
0
SIZING
RAN
GE
FUL
10
FUL
VENGVE
VL
AARVVA
FULL
ZING
GE
(ME
TE
400,00
0
300,00
0
200,00
0
.08
.07
.06
.05
.04
.03
.1
.02
GE
TER IN GALLONS PER MINUTEAATWFLOW OF
100,00
0
80,000
70,000
60,000
50,000
40,000
30,000
20,000
10,000
8,00
07,00
06,00
05,00
0
4,00
0
3,00
0
2,00
0
1,00
0
800
700
600
500
400
300
200
100.06
Size 3 4 6 8 10 12 14 16 18 20 24 30 36 42 48 54 60
Cv 248 475 1160 2200 3600 5400 7600 10,300 13,200 16,800 25,500 42,000 63,000 90,000 119,000 155,000 195,000
Flow Coefficients
10
Headloss Chart
Energy Cost SavingsThe Tilted Disc® Check Valve possesses the lowest headloss of any check valve available today, allowing the leastamount of energy during system operation to be consumed. The continuous electrical energy savings that resultfrom using the Val-Matic Tilted Disc® Check Valve can be seen in the table below for 30” valves. This informationwas calculated using Val-Matic’s Energy Cost Calculator on www.valmatic.com.
Valve TypeFlow
Coefficient(K)
Headloss(ft)
40-YearEnergy Cost*
40-YearTilted-Disc
Energy Cost
40-YearTilted-Disc
Savings
Globe-Style Control Valve 5.70 12.8 $1,111,980 $122,903 $989,077
Silent Check Valve 3.00 6.7 $585,253 $122,903 $462,350
Swing Check Valve 1.60 3.6 $312,135 $122,903 $189,232
Tilted Disc® Check Valve 0.63 1.4 $122,903
*Assumes 50% usage, $.08/kw-hr, 12 ft/sec, 0.8 efficiency.
11
Installation Dimensions
FLOW
F
E
B
C
G
A
D
H
Tilted Disc Check Valve - Base Valve
Dimensions in InchesValveSize*
ModelNo.
ANSIClass A B C D E F G H
Valve Weights(lbs)
3980397039603
125250150
9.506.006.636.00
7.508.257.50
0.941.130.94
3.00 12.00 9.00 2.25414841
4980497049604
125250150
11.507.507.887.50
9.0010.009.00
0.941.250.94
4.00 13.00 10.00 2.639110391
6980697069606
125250150
15.009.5010.639.50
11.0012.5011.00
1.001.441.00
6.00 16.00 13.00 2.88168213168
8980897089608
125250150
19.5011.7513.0011.75
13.5015.0013.50
1.131.631.13
8.00 19.00 16.00 3.50322376322
10981097109610
125250150
24.5014.2515.2514.25
16.0017.5016.00
1.191.881.19
10.00 23.00 18.00 4.50470557470
12981297129612
125250150
24.0017.0017.7517.00
19.0020.5019.00
1.252.001.25
12.00 26.00 21.00 2.75735850735
14981497149614
125250150
30.0018.7520.2518.75
21.0023.0021.00
1.382.131.38
14.00 29.00 25.00 4.139971153997
16981697169616
125250150
30.0021.2522.5021.25
23.5025.5023.50
1.442.251.44
16.00 32.00 28.00 0.75133015351330
18981897189618
125250150
33.0022.7524.7522.75
25.0028.0025.00
1.562.381.56
18.00 36.00 30.00 2.50156118931561
20982097209620
125250150
32.0025.0027.0025.00
27.5030.5027.50
1.692.501.69
20.00 39.00 32.00 0.50193223021932
24982497249624
125250150
38.0029.5032.0029.50
32.0036.0032.00
1.882.751.88
24.00 46.00 37.00 0.50306236463062
30983097309630
125250150
52.0036.0039.2536.00
38.7543.0038.75
2.133.002.13
30.00 55.00 47.00 2.75531260385312
36983697369636
125250150
59.5042.7546.0042.75
46.0050.0046.00
2.383.382.38
36.00 65.00 51.00 2.00818988938189
42984297429642
125250150
62.5049.5052.7549.50
53.0057.0053.00
2.633.692.63
42.00 73.00 59.00 0.00115781291911578
48984897489648
125250150
65.0056.0060.7556.00
59.5065.0059.50
2.754.002.75
48.00 82.00 69.00 -3.75159261724615926
*Contact Factory for sizes larger than 48”.
12
Installation Dimensions
MK
L
JFLOW
Tilted Disc Check Valve with Bottom Mounted Oil Dashpot
Dimensions in InchesValveSize*
ModelNo.
ANSIClass J K L M
Valve Weights(lbs)
69806B9706B9606B
125250150
16.00 12.00 3.00 9.00200245200
89808B9708B9608B
125250150
17.00 11.00 4.00 8.00360414360
109810B9710B9610B
125250150
18.00 9.00 5.00 5.00508595508
129812B9712B9612B
125250150
20.00 11.00 5.00 7.00801916801
149814B9714B9614B
125250150
21.00 8.00 5.00 4.00106312191063
169816B9716B9616B
125250150
23.00 9.00 5.00 5.00141416191414
189818B9718B9618B
125250150
24.00 7.00 5.00 3.00164619781646
209820B9720B9620B
125250150
25.00 8.00 6.00 3.00201923892019
249824B9724B9624B
125250150
27.00 4.00 6.00 1.00315637403156
309830B9730B9630B
125250150
35.00 6.00 8.00 1.00556662925566
369836B9736B9636B
125250150
39.00 2.00 8.00 5.00844591498445
429842B9742B9642B
125250150
43.00 5.00 8.00 5.00119171325811917
489848B9748B9648B
125250150
52.00 8.00 8.00 2.00162621758216262
*Contact Factory for sizes larger than 48”.
Dimensions “K” and “L” represent theclearance required to remove dashpot unit.However, dimension “L” can be reduced to 1”for low clearance applications. Consult factoryfor dashpot removal instructions.
13
Installation Dimensions
FLOW
N
P
Tilted Disc Check Valve with Top Mounted Oil Dashpot
Dimensions in InchesValveSize*
ModelNo.
ANSIClass N P
Valve Weights(lbs)
69806T9706T9606T
125250150
23.00 12.00227272227
89808T9708T9608T
125250150
29.00 17.00426480426
109810T9710T9610T
125250150
31.00 17.00574661574
129812T9712T9612T
125250150
34.00 21.009321047932
149814T9714T9614T
125250150
36.00 21.00119513511195
169816T9716T9616T
125250150
43.00 24.00164318481643
189818T9718T9618T
125250150
45.00 24.00187322051873
209820T9720T9620T
125250150
53.00 28.00239827682398
249824T9724T9624T
125250150
56.00 28.00353741213537
309830T9730T9630T
125250150
66.00 36.00626169876261
369836T9736T9636T
125250150
78.00 36.00923499389234
429842T9742T9642T
125250150
89.00 43.00129281426912928
489848T9748T9648T
125250150
99.00 43.00180811940118081
*Contact Factory for sizes larger than 48”.
SCOPE1.1 This specification covers the design, manufacture,
and testing of 3 in. (80 mm) through 60 in.(1500mm) Tilted Disc Check Valves suitable forpressures up to 400 psig (2750 kPa) water service.
1.2 The Check valves shall be of the Tilted Disc metalseated, full body type capable of acceptingoptional bottom or top mounted oil dashpots.
STANDARDS AND APPROVALS2.1 The valves used in potable water service shall be
certified to NSF/ANSI 61 Drinking Water SystemComponents - Health Effects and certified to beLead-Free in accordance with NSF/ANSI 372.
2.2 A 20 in. (500 mm) valve or larger shall be proof ofdesign cycle tested through 250,000 cycles in thehorizontal position and leak tested at the ratedpressure. The leakage rate shall be less than 1fluid ounce per hour per inch of valve size afterthe test.
2.3 Manufacturer shall have a quality managementsystem that is certified to ISO 9001 by anaccredited, certifying body.
CONNECTIONS3.1 The valves shall be provided with drilled flanges
in accordance with ANSI B16.1 for Class 125 Castiron flanges or ANSI B16.42 for Class 150 and 300ductile iron flanges. Iron flanges shall be flatfaced.
3.2 Flanged inspection ports shall be providedupstream and downstream of the valve disc forinspection or use with optional dashpots on 6 in.and larger valves.
DESIGN4.1 The valve body shall consist of two sections bolted
together with a central diagonal flange inclinedat an angle of 55 degrees. The inlet body sectionshall contain a seat ring positioned and capturedby the diagonal flange. The outlet body sectionshall accept eccentrically located pivot pintrunnions with sealed covers and lubricationgrease fittings.
4.2 The eccentric pivot trunnions shall be located todivide the disc into approximately 1/3 and 2/3proportions and also allow the seating surface ofthe disc to rotate away from the seating surfaceof the seat ring without contact. Clearance shallbe provided between the pivot pin and bushing when the disc is seated to prevent binding and toensure a tight seal. The minimum pivot pindiameter shall be as shown below.
4.3 The flow area through the valve body inlet andoutlet shall be equal to the nominal pipe size andgradually increase to an area 40 percent greaterat the valve seat.
4.4 A position indicator shall be supplied on 6 in. andlarger valves and visually show disc position at alltimes.
4.5 The valve disc and seat shall have a seatingsurface finish of 32 micro-inch or better to ensurepositive seating at all pressure. The leakage rateshall not exceed one-half of the allowable rateallowed by AWWA Standard C508 or 0.5 oz (15 ml)per hour per inch (mm) of valve size.
4.6 6” (150 mm) and larger valves should be capableof accepting a field installed Bottom Mounted OilDashpot.
4.7 The valve flow way shall be contoured andunrestricted to provide full flow areas at alllocations within the valve. Full flow shall be basedon an open stroke of 40 degrees to assurestabilization of the disc when open. Cv flowcoefficients shall be verified by an independenttesting laboratory.
MATERIALS5.1 The valve body shall be constructed of ASTM A126
Class B cast iron for Class 125 and Class 250 valvesup to 10 in. (250mm). 12 in. (300mm) and largerClass 250 and Class 150 valves shall be constructedof ductile iron ASTM A536 Grade 65-45-12.
5.2 The disc in sizes up to 10 in. (250mm) shall be one-piece construction with integral seat andconstructed of ASTM B271 Alloy C95400 aluminumbronze. 12 in. (300mm) and larger discs shall beASTM A125 Class B cast iron. Discs furnished for12” (300mm) and larger valves with top oildashpots shall be constructed of ASTM A536Grade 65-45-12 ductile iron. The disc seating ringshall be ASTM B271 Alloy C95500 centrifugallycast aluminum bronze. The mating seat ringlocated in the body shall be ASTM B271 AlloyC95400 centrifugally cast aluminum bronze.
5.3 The pivot pins shall be ASTM B505 Alloy C95500aluminum bronze and shall be guided by abushing constructed of ASTM B505 Alloy C95400aluminum bronze (12 in. and larger valves).
Series 9000 Specifications
14
ValveSize (IN)
PinDiameter
(IN)
3 0.562
4 0.625
6 1.125
8 1.375
10 1.625
12 1.875
14 2.125
16 2.375
18 2.50
ValveSize (IN)
PinDiameter
(IN)
20 2.75
24 3.25
30 3.75
36 4.25
42 4.875
48 5.75
54 6.00
60 6.75
Series 9000 Specifications
OPTIONS6.1 Single or double bypass piping shall be provided
when specified with piping and valves in sizesshown below.
6.2 A NEMA-4 machine tool type limit switch withDPDT contacts shall be provided when specified.The switch shall be mounted to the inspectioncover and have an adjustable trip arm for sensingthe closed position.
6.3 A bottom mounted oil dashpot shall be factoryinstalled (12” (300 mm) and larger) in theupstream inspection port when specified toprovide hydraulic control of the final 10% ofvalve closure and reduce water hammer normallyassociated with rapid flow reversal conditions onpump shut down. The dashpot shall consist of ahigh pressure hydraulic cylinder with a minimumbore size as shown below, adjustable externalflow control valve, pressurized oil reservoir andpiping designed to control the closing speed ofthe last 10% of travel in 1-5 seconds. A dashpotspacer which connects the cylinder to the valveshall have an air gap to prevent hydraulic fluidfrom entering the valve and contaminating thewater system. A snubber rod fitted with O-ringseals and rod wiper scrapers shall make contactwith the lower portion of the disc during closure.
6.4 A top mounted oil dashpot shall be factoryinstalled in the downstream inspection port whenspecified to provide independent hydrauliccontrol of the valve opening and closing strokesto reduce water hammer normally associated withpump operation. The dashpot shall consist of ahigh pressure hydraulic cylinder with a minimumbore size as shown below and with internalcushion adjustment, two external flow controlvalves, a pressurized oil reservoir with a minimumsize as shown below, a stainless steel non-pressurized reservoir, and piping. The unit shallindependently control the opening and closingstroke in the range of 5-30 seconds. Additionally,the closing stroke shall be two-stage with the last
10% of closing travel dampened with the internalcylinder cushion. A dashpot spacer which connectsthe cylinder to the valve shall have an air gap toprevent hydraulic fluid from entering the valveand contaminating the water system. Aconnecting rod with a minimum diameter asshown below and fitted with O-ring seals and rodwiper scrapers shall be linked to an integrally castclevis on the disc. The connecting rod shall beattached to the cylinder rod with a quick changecoupling constructed of 17-4 PH stainless steel.The cylinder rod, connecting rod, and couplingshall be held in place by a coupling retainer toallow decoupling of the cylinder while the checkvalve is under pressure.
6.5 The valve interiors and exteriors shall be coatedwith an NSF/ANSI 61 certified fusion bondedepoxy in accordance with AWWA C550 whenspecified.
MANUFACTURE7.1 The valves shall be hydrostatically tested at 1.5
times their rated cold working pressure.Additional tests shall be conducted per AWWA,ANSI, MSS or API standards when specified. Whenrequested, the manufacturer shall provide testcertificates, dimensional drawings, parts listdrawings, and operation and maintenancemanuals.
7.2 The exterior of the valve shall be coated with auniversal alkyd primer. The valve interior shall becoated with an epoxy coating approved forpotable water.
7.3 The Tilted Disc® Check Valves shall be Series 9000,9000B (with bottom oil dashpot), or 9000T (withtop oil dashpot) as manufactured by Val-Matic®Valve & Mfg. Corporation, Elmhurst, IL. USA orapproved equal.
15
ValveSize (IN)
By-PassSize(IN)
6-8 1.5
10-14 2.0
16-24 3.0
30-60 4.0
ValveSize (IN)
BoreDiameter
(IN)
6-10 1.50
12-14 2.00
16-24 2.50
30-36 3.25
42-48 4.00
54-60 5.00
ValveSize (IN)
BoreSize(IN)
ReservoirSize
(GAL)
RodDiameter
(IN)
6 2.50 0.1 1.000
8-10 3.25 0.3 1.375
12-14 4.00 0.6 1.750
16-18 5.00 1.1 2.000
20-24 6.00 2.5 2.500
30 7.00 6.0 3.500
36-42 8.00 6.0 4.000
48-60 10.00 10.0 5.000
Val-Matic’s quality of design and meticulousworkmanship has set the standards by whichall others are measured. Quality design fea-tures such as the Ener•G® Ball Valve with itsenergy efficient design, fusion bonded epoxyand adjustable resilient seating....Cam-Centric® Plug Valves have more requestedfeatures than any other eccentric plugvalve....American-BFV® Butterfly Valvesinclude a field replaceable seat without theneed for special tools....Tilted Disc® CheckValves with high strength and wear resistantaluminum bronze trim as standard....SilentCheck Valves featuring combinedresilient/metal-to-metal seating....Sure SealFoot Valves provided with a heavy duty stain-less steel screened inlet....Swing-Flex® andSurgebuster® Check Valves designed withan unrestricted full flow area....Dual Disc®
Check Valves utilizing stabilized compo-nents to provide extended life....Air Release,Air/Vacuum and Combination Air Valvesprovided standard with Type 316 stainlesssteel trim....VaultSafe® family of productsincludes the FloodSafe® Inflow Preventer,FrostSafe® two-way damper and theVentSafe® vent pipe security cage. TheQuadroSphere® Trunnion Ball Valve fea-tures a unique ball design with recessedsurfaces creating additional flow paths toprovide a self-cleaning action and reducedwear and torque.
Val-Matic is totally committed to providing thehighest quality valves and outstanding serviceto our customers. Complete customer satisfac-tion is our goal.
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Val-Matic Valve and Manufacturing Corp.905 Riverside Drive, Elmhurst, IL 60126
Phone: 630-941-7600 Fax: 630-941-8042www.valmatic.com
Copyright © 2016 Val-Matic Valve & Mfg. Corp.ISO 9001:2008 certified company 2/16
Bulletin 9000Rev6