Full Flange Knife Gate Valve
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Wey Knife Gate Valve Models A3 & W3
Wey Knife Gate Valve Models A3 & W3
Features
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Class 250
Class 300
Body Pressure Ratings
Body Rating Materials of Construction
Cast iron & cast ni-resist (ASME/ANSI B16.1)
Ductile iron & ductile ni-resist(ASME/ANSI B16.42)
Carbon steel & steel alloys (ASME/ANSI B16.34)
Temperature: The operating temperature must not exceed the elastomer maximum temperature rating.
(For example: Nitrile/Buna N = 180˚ F, EPDM = 250˚ F, FKM/Viton = 400˚ F, Aflas = 500˚ F)
Body StylesModel A3: 2" to 42" ANSI 300 flangesWey face-to-face dimensions
Model W3: 2" to 42" ANSI 300 flangesMSS SP-135-2006 face-to-face dimensions
Raised or flat face flanges are available. Threaded flange bolt holes are standard. Drill- through flange bolt holes are optional.
ISO 9001-2008/PED-Annex (Mod H)
Heavy-duty body design conforming to MSS SP-135, MSS SP-81 or customer specified face-to-face dimensions
Dual heavy-duty top transverse seal with upper & lower scraper blades
TFE packing (re-packable while in service and under pressure)
Reduced chest cavity (prevents jamming)
Gate-guided for full length of stroke for bi-directional bubble-tight shut-off
Self-flushing contoured body bore
ANSI 150 or 300 flange bolt pattern
Type 17.4-PH stainless steel gate
Proprietary non-stick coating for body and gate
Totally enclosed heavy-duty bonnet
Lifting lugs
Lexan windows for position indication
Lock-out pins
Proximity switches
Replaceable ni-hard wear ring (optional)
Hydraulic, pneumatic, handwheel, manual bevel gear, or electric actuators
Solenoid valves or positioners
Optional urethane or chrome carbide lining
Section of transverse seal illustrating how sealing compound is inserted into chamber to repack valve while in service.
Repacking the valve
Resilient transverse sealVarious elastomeric seal materials available. Seal includes compression loaded scraper blades to wipe gate clean and protect seal. Repackable in service and under pressure/vacuum.
Dual heavy-duty top transverse seal
Wear Ring Options: n Chrome carbide n Urethane n Ceramic n Ni-hard
Mechanically retained resilient seat
Section viewMechanically retained resilient seal insures bubble-tight shut-off with pressure on either side of gate. Seal will not pull out of specially machined groove.
Gate
Compression o-rings
Rubber seal
Wear ring
Body
Scraper blades
Packing
Body
Gate
Resilient seat
Actuator Options Accessories
HandwheelChainwheelSquare drive nutManual bevel gearPneumatic cylinderHydraulic cylinderElectric actuator
Note: Consult factory for details
Solenoid Lock-outMechanical limit switches Position indication scaleProximity switches Scale cutterNi-hard wear ring Powder-Pac optionPneumatic positioner Electronic positioner V-Port insert
See live demonstration
B = Face-to-Face for standard Model A3 (per MSS-SP-81)B1 = Face-to-Face for Model W3 (per MSS-SP-135)G-G1 = Please consult factory for cylinder sizing, model and dimensionsM = Depth of blind tapped holes in chest area of valveN = Number of blind tapped holes in chest area per valve
Sizes and Dimensions
Flange Bolting: Quantity, bolt circle diameters, flange bolt threads are per ASME B16.5 Class 300 (NPS less than or equal to 24"), and ASME B16.47 Series A Class 300 (NPS greater than 24"). Optional drill-through flange bolt holes are available.Consult Wey Valve, Inc., for depth and number of blind tapped holes in chest area of valve.
Valve SizeInches
2"
3.15
2.362.752.75
3.54
4.334.724.725.515.90
5/8"2.75
4.124.635.385.636.256.637.007.38
12.164.12
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23.50
–14.8316.93
11.77 12
14.25
0.75
14.75
64.32
15.25
13.80
47.66
6.69 8.38
3"4"6"8"
10"12"14"16"18"20"24"26"28"30"36"
3.94
7.087.488.269.84
4.00
8.5010.0010.5012.0035.43
B
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23.12
23.50
121.78104.0297.49 67.51
50.7460.05
41.1940.02
42.12
19.39
27.65
9.12 13.3015.57
19.2622.9326.1131.7136.4237.6044.0747.1555.1359.4062.5969.1579.782.00"
36.36
25.50
30303024
24202020
16.7515.2515.25 18
35.3028.7725.5921.92
12121212161618
74.07
182424 20
16161212121288 444
Consult factory for valve sizes 42"-72" dimensions. Dimensions shown in inches**Model A3 valves have a rising stem. The dimensions shown account for the stem at its highest point.Important note: All dimensions subject to change. Consult factory for certified dimensions.
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Your contact
A B1 C D E F G-G1 H J K M NL
29.5235.4329.5223.6219.6817.7215.7513.7811.819.877.845.903.943.151.97
46.0039.2537.0034.5032.0027.0024.7522.5020.2517.7515.2513.0010.637.886.625.00 6.50
8.2510.0012.5015.0017.5020.0023.0025.5028.0030.5036.0038.2540.7543.0050.00
1-3/4"1-5/8"1-5/8"1-1/2"1-1/4"1-1/4"1-1/4"1-1/8"1-1/8"1- 00"
3/4"3/4"3/4"7/8"
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92.3585.6172.3567.4361.0959.9449.09
13.3013.3013.3013.30
25.5025.50 84.70
0.750.750.860.981.021.181.341.341.341.261.771.571.971.972.16
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Dimensions
Note:Bevel gears (3:1) are recommended for 2”-10” valvesBevel gears (4:1) are recommended for 12”-20” valvesBevel gears (6:1) are recommended for 24” and larger valvesConsult factory for larger valves or special applications.
Hydraulic CylinderPneumatic Cylinder Bevel Gear
©2014 Wey Valve, Inc.All information for reference only. Modifications reserved.