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MEDIUM DUTY CAST IRON SLIDE GATES

SERIES 20-10C

Revised October 2007 Armtec reserves the right to alter designs.

Series 20-10CFlow Control Slide GatesRevised October 2007 1

Series 20-10C Sluice Gate

GeneralThe Armtec Series 20-10C Sluice Gate is a qualityand highly economical gate for a variety of lowhead applications including:

• Irrigation turnout structures

• Water and wastewater treatment plants

• Flood control and retention ponds

• Storm and sanitary sewers (Deluxe Model)

• Pump Stations

DesignThe 20-10C Sluice Gate is available in standard sizesfrom 203 mm to 1067 mm diameter and designedto withstand:

• 20’ (6m) of face pressure (seating head)

• 10’ (3m) of back pressure (unseating head)

The gate consists of a flat back cast iron seat, slideand cross-bar, which is attached to a galvanizedsteel frame and yoke. The yoke supports the liftsystem forming a self-contained unit. Its flat backconfiguration makes it suitable for mounting topipes, thimbles and concrete headwalls andmanholes.

Standard Model – Materials• Frame – Galvanized Steel

• Stem – Carbon Steel

• Gate Seat and Slide – Cast Iron with PolyamineEpoxy Coating

• Seating Faces – Machined Cast Iron

• Fasteners – Zinc Plated SteelNote: Suitable for most storm sewer and irrigation water applications.

Deluxe Model – Materials• Frame – Stainless Steel

• Stem – Stainless Steel

• Gate Seat and Slide – Cast Iron with Self-primingEpoxy Coating

• Seating Faces – Machined Bronze

• Fasteners – Stainless SteelNote: Suitable for most sanitary sewer applications.


Gate Seats/SealsThe slide moves vertically along machined cast ironfaces (Standard Model) or machined bronze faces(Deluxe Model) which are attached to the frame andslide.Sealing is achieved by two adjustable side wedgesthat come in contact with faces on the slide cross barjust as the gate approaches the closed position.The sealing faces do not protrude into the waterwayopening, allowing for full sluice discharge.

2.

1.3.

4.

5.

# Part Description

1 Slide2 Cross Bar3 Side Wedge

4 Yoke Side Supports Frame5 Gate Seat

Typical Slide/Seat Cross Section

Series 20-10CFlow Control Slide GatesRevised October 2007

3

MountingsThe 20-10C Gate can be installed onto a variety ofmounting surfaces as defined by the following codes:

On Concrete Surface • FC (Flat Concrete Wall)

• CC( Curved Concrete Wall)

On Steel Surface • MF (Metal Flange)

• MT (Metal Thimble)

Metal Thimble Mounting (MT) – Side Cross Section

Curved Concrete Wall Mounting (CC) – Side SectionFlat Concrete Wall Mounting (FC) – Side Cross Section

Metal Flange Mounting (MF) – Side Cross Section


Standard Configurations and SizesThe Engineering Table below summarizes the availablegate diameters and dimensional data for each size ofgate. These gates are stocked in standard frameheights as listed, but custom fabricated configurationoptions are available.Various lift extensions are available, as shown on Page5. Contact an Armtec Sales Representative for moreinformation.

Anchor Bolt

H

Fram

e H

eigh

tB

102A

A+204 mmInstallation Clearance

C

ARMTEC

Gat

e Op

enin

gDi

amet

er

DE

FAnchor bolt

Stock Anchor BoltGate Stem Lift Frame Bolt Circle

Diameter A B C D E F Diameter Type Height Diameter Diametermm mm mm mm mm mm mm mm mm mm mm mm203 324 146 289 124 73 14 22.2 LW-14 914 12.7 292

254 387 171 340 130 73 16 22.2 LW-14 1000 12.7 356

305 483 241 390 137 73 18 22.2 LW-14 1000 12.7 413

406 565 262 492 165 73 18 22.2 LW-14 1000 12.7 533

457 622 279 581 190 95 19 28.6 LW-14 1500 15.9 584

508 686 311 632 203 98 19 28.6 LW-14 1500 15.9 648

610 800 368 733 244 102 21 28.6 LW-14 1500 15.9 762

762 997 460 911 283 117 22 38.1 LW-24 1500 19.1 952

914 1149 537 1064 324 124 25 38.1 LW-24 2000 19.1 1105

1067 1346 673 1216 368 141 30 38.1 LW-24 2000 19.1 1257

Dimension Data


Lift Extensions – Detailed Configuration Options and Material Specifications

ARMTEC ARMTEC

ARMTEC

Pedestal to Slab (FP) T-Wrench with Lift Operating Extension (TWH)

Pipe Frame Extension (PFE)

ARMTEC

Pedestal to Wall Bracket (FPW)

Manual type liftwith handwheel

Pedestal

Stem

Stem clamp with bushing

T-wrench handle

Floor box with cover

Lift operator extension (LOE)

LOE Clamp

Lift

Stem

Manual type liftwith hand wheel

Wall bracket

Stem guide

Stem

Manual type lift with hand wheel

Pipe frame extension

Pipe frame clamp

Stem


Stem CoversStem covers should always be used for outsideinstallations to keep the stem threading clean offine grit which can increase lift nut wear and theamount of torque to operate gate. The stem cover ismade of aluminum with lexan plastic viewingwindows.

Markings are provided in metric and imperial unitsto mark the location of the gate position.

Stem GuidesStem guides are provided as required to support thestem from buckling. The stem guides are designed asper AWWA Standards. The stem guide is fabricated from304 stainless steel with an ultra high molecular weightpolyethylene (UHMWPE) bushing.

Aluminum stem cover

with LEXAN®window ruler with metricand imperial

units.

Fabricated stainless steel stem guide clamp with UHMWPE bushing.

Electric Lift OptionManual Series 20-10C gates can be provided withArmtec’s electric Drill Pak System. The Drill PakSystem comes complete with Industrial Dutyelectric drill (110V, Single Phase, 60 Hz), mountingtripod, clutch and 2” square adapter socket. The DrillPak is designed to be operated in the horizontalposition.

Series 20-10C gates can also be provided with anelectric actuator in place of manual lift systems.Contact an Armtec Sales Representative for moreinformation.

Gate Identification Code:(The Gate Identification Code is a fast and efficient method to specify the gate which is required.)

1. Gate Series – 20-10C

2. Opening size in millimeters – diameter

3. Gate Material – Standard or Deluxe

4. Mounting Type

5. Lift Configuration

Code Mounting SurfaceOn Concrete Surface

FC Flat Concrete Wall

CC Curved Concrete Wall (Aperature opening only)

On Metal Surface

MF Metal Flange (Aperature opening only)

MT Metal Thimble (Aperature opening only))


Series Size Gate Mounting Lift (mm) Material Type Configuration

20-10C

Code MaterialS Cast iron gate, Cast iron seating faces, galvanized frame, zinc-plated fasteners,

carbon steel stem

D Cast iron gate, Bronze seating faces, 304 stainless steel frame and fasteners,303 stainless steel stem

Code Lift TypeSCF Hand Mounted on Yoke

FP Pedestal to Slab

TWH T-Wrench Handle Lift Operator Extension

PFE Pipe Frame Extension

FPW Pedestal to Wall Bracket


Common Gate Identification Codes:Examples 1 and 2 show common frame and stem configurations and resulting gate codes:

Example 1• Gate Series (20-10C)

• Size (305 mm diameter)

• Standard Gate

• Mounting Surface – Flat Concrete Wall (FC)

• Handwheel on Yoke (SCF)

Example 2• Gate Series (20-10C)

• Size (914 mm diameter)

• Deluxe Gate

• Mounting Surface – Metal Flange (MF)

• Pipe Frame Extension

Series Size Gate Mounting Lift(mm) Material Type Configuration

20-10C 305 S FC SCF

Series Size Gate Mounting Frame(mm) Material Type Configuration

20-10C 914 D MF PFE

ARMTEC

20-10C – 305-S-FC-SCF

ARMTEC

20-10C – 914-D-MF-PFE

305

914


Gate Specifications

1. General Specifications1.1 Scope

This specification covers medium duty cast iron sluicegates and operators in which the gate is designed towithstand seating or unseating heads in water supplyapplications.

1.2 Governing Standards

No AWWA specifications currently cover the use ofmedium duty cast iron sluice gates.

1.3 General

The gate assembly shall consist of the gate frame andslide, stem, lift mechanism and accessories. The gateassembly shall be designed, fabricated and shopassembled in accordance with the manufacturer’s shopdrawings and specifications.

1.4 Acceptance of Approved Alternate Products

To be considered by the Engineer as an approvedalternate product, the alternate gate manufacturershall submit a list of 50 fabricated slide gate projects(minimum) indicating proven operation in similarapplications.

1.5 Quality Assurance

Prior to shipment, the gate assembly shall be shopinspected and adjusted for proper operation.

1.6 Submittals

The manufacturer’s shop drawings shall indicate thegate assembly’s opening size, type of material,schedule of parts and principal dimensions. Gateassembly installation procedures shall also be providedto supplement the shop drawings.

2. PerformanceSeating and unseating heads shall be measured fromthe water surface to the centre of the gate slide. Thegate assembly shall be designed to the design headsshown below:

• Seating Head: 6.1m (20’)

• Unseating Head: 3.05m (10’)

3. Gate Assembly Product DetailsThe gate assembly shall consist of the gate seat, frame,slide, crossbar, wedges, stem, lift mechanism andaccessories. The gate assembly shall be factoryassembled prior to shipment. The gate assembly shallbe available in standard and deluxe materialcombinations as detailed in Section 4 (Materials).

3.1 Gate Seat and Frame

The cast iron gate seat shall have a flat backconfiguration suitable for attachment to a concretewall or a round pipe flange.

The self-contained gate frame shall consist of twovertical side guide angles and horizontal head angle,attached to the cast iron gate seat.

3.2 Gate Slide, Crossbar and Wedges

The cast iron gate slide shall incorporate integralguides to engage the side angles and permit travel ofthe slide. A horizontal cast iron crossbar, bolted to thegate slide, shall incorporate side wedges that engagewedges mounted to the side angles.

3.3 Gate Seating Faces

The gate shall be furnished with machined metalseating faces available in standard and deluxe materialcombinations detailed in Section 4 (Materials). In theclosed position, the clearance between the seat andthe slide shall not exceed 0.004” (0.10 mm).

3.4 Gate Assembly Fasteners

Gate Assembly Fasteners shall be in accordance withSection 4 (Materials).

3.5 Mounting Gaskets and Anchors

The gate shall be mechanically fastened to themounting surface with anchor bolts or with fasteners.Gasket material shall be buytl rubber sealant inaccordance with Section 4 (Materials).

3.6 Stem

The gate slide shall be raised by a rising stem liftsystem. The stem shall be available in the materialcombinations as detailed in Section 4 (Materials) with stem threads machine cut of the acme type. The bottom of the stem shall be hooked to engage a pocket on the front face of the gate slide.

10

The minimum stem diameters are detailed below:

3.7 Stem Covers

The stem cover shall be made of aluminum withLEXAN® window. Markings shall be provided in metricand imperial units to mark the location of the gateposition.

3.8 Lifting System

The lift system shall consist of a handwheel, or hardcrank lift nut, stop nut and housing designed suchthat the gate can be operated with a maximum of110N pull.

The lift nut shall be cast such that a 51 mm square nutprotrudes from the top so that the hand wheel, liftoperating extension or T-wrench can be attached. Thestop nut shall be furnished to limit the downwardtravel of the stem when the closed position is reached.

The lift system shall be supplied as per the Slide GateSchedule (Section 5).

Gate Size Range Stem(mm) Diameter

(mm)203 - 406 22457 - 610 28762 - 1042 38

4.0 Materials

Component Standard Model 20-10C Deluxe Model 20-10CSeat Cast Iron A48 Cast Iron A48

• Class 30 • Class 30

Frame Galvanized Steel SSTL (Type 304 or 304L)• Structural steel • ASTM A276• CSA G164

Slide, Crossbar and Wedges Cast Iron A48 Cast Iron A48• Class 30 • Class 30

Seating Faces Cast Iron Aluminum Bronze• A48, Class 30 • ASTM B36, C26000

Assembly Fasteners Zinc Plated Steel SSTL (Type 304)• Grade 5 (Bolts) • ASTM F593 (Bolts)• Grade 2 (Nuts) • ASTM F594 (Nuts)

Mounting Gasket Butyl Joint Sealer (12 mm square) Butyl Joint Sealer (12 mm square)• Hamilton Kent – Kent Seal • Hamilton Kent – Kent Seal

Anchor Bolts Zinc Plated Steel SSTL (Type 304)• Grade 5 (Bolts) • ASTM F593, F594• Grade 2 (Nuts)

Stem Carbon Steel SSTL (Type 303)• C1018/1020 • ASTM A582

Stem Cover Aluminum Aluminum

Lift Housing Cast Iron Cast Iron• A48, Class 30 • A48, Class 30

Lift Nut Cast Zinc Aluminum Cast Zinc Aluminum• ZA12 • ZA12

Handwheel Cast Aluminum Cast Aluminum• AA No. 356.1 • AA No. 356.1

Paint Amerlok 400 Amerlok 400(Wedges, Slide, Seat andCrossbar)

Gate Tag No.

Gate Type

Dimensions (diameter)

Head (Seating/Unseating)(20’ seating Head Max/10’ unseating Head Max)

Mounting Surface (FC, CC, MF, MT)

Invert Elevation

Operating Floor Elevation

Lift Type


5. Slide Gate Schedule

6. Installation Handling and installation of all components shall be inaccordance with the manufacturer’s shop drawingsand installation instructions. If the gate is to bemounted to a concrete wall, extra care should be takento ensure that the wall is flat and smooth with amaximum variation of 3mm across the mountingsurface of the gate.

7. CommissioningAfter installation of the gate, the seating surfaces shallbe cleaned thoroughly of all foreign materials, thestem lubricated (if required) and the final adjustmentsmade. The gate shall then be cycled from the fullyclosed to the fully open position to ensure smoothoperation of the gate. If an electric actuator isinstalled, the limit switches shall be set in accordancewith the manufacturer’s installation instructions.


Armtec 20-10C Quick Inquiry Sheet

Project Name:

Company Name:

Address:

Phone:

Fax:

Email:

Unit of measure: mm inch

Step 1:

Tag Number :

Quantity of Gates :

Material: Standard (Galvanized Frame, Zinc Plated Fasteners, Cast Iron Seating Faces)

Deluxe (304SS Frame, 304SS Fasteners, Bronze Seating Faces)

Step 2:

Gate Size :

Diameter:

Diameter


Step 3 – Operating Requirements

Seating head:

Unseating head:

Invert Elevation:

Operating Floor Elevation:

Step 4 – Mounting Requirements

Concrete Wall (FC) Metal Flange (MF) Curved Back (CC)

Cast Iron Thimble (MT) Thimble Depth Thimble Type (‘F’ or ‘E’)

Step 5 – Lift Requirements

Manual “LW” Manual Bearing: Manual Geared:

Electric: Volts Phase Cycle Special Requirements

Cylinder : Water: Air: Operating Pressure:

Step 6 – Lift Mounting

Self Contained Frame (SCF)

T-Wrench with Lift Operating Extension (LOE)

Pipe Frame Extension (PFE)

Pedestal to Slab (FP)

Pedestal to Wall Bracket (FPW)

DIST

ANCE

FRO

MDI

STAN

CE F

ROM

INVE

RT T

OIN

VERT

TO

OPE

RATI

NG

FLO

OR

OPE

RATI

NG

FLO

OR

INVERTINVERTELEVATIONELEVATION

SEATING SEATING HEADHEAD

UNSEATINGUNSEATINGHEADHEAD

cLGate

Diameter

Documents

MEDIUM DUTY CAST IRON SLIDE GATES SERIES 20 …files.armtec.com/Downloads/Categories/Drainage-Solutions/20-10C...MEDIUM DUTY CAST IRON SLIDE GATES SERIES 20 ... that come in contact