Full Flange Knife Gate Valve

weyvalve.com

Wey Knife Gate Valve Models A3 & W3

Wey Knife Gate Valve Models A3 & W3

Features

n

n

n

n

n

n

n

n

n

n

n

n

n

n

n

n

n

n

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

–

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

––––

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.

weyvalve.com

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"

–––––––––

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

–

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.