Products

Pneumatic Wafer Butterfly Valve

Material: Carbon steel, Stainless steel
Applicable medium: Air, water, sewage, vapor, gas, oil, etc
Driving mode: Manual, pneumatic
Application: Regulate flow or closure medium in metallurgy, petroleum, power and other industries.
Size: DN50-2000

Pneumatic Wafer Butterfly Valve

Pneumatic Wafer Butterfly Valve Introduction

The Pneumatic wafer butterfly valve consists of the rubber seal, valve plate (made of carbon steel or stainless steel) and valve stem. Applicable temperature is 80~120℃. It is widely utilized in food, pharmacy, chemical industry, petroleum and other industries to regulate flow or closure medium.

Characteristics of Pneumatic Wafer Butterfly Valve

1. Novel design, unique structure, light weight, rapid open and close

2. Small torque, convenient operation

3. Can be installed in any position and it is convenient to maintain.

4. The seal can be replaced and realize bidirectional sealing and zero leakage.

5. Aging resistance, corrosion resistance, and long service life.

Pneumatic Wafer Butterfly Valve Standards

 

Manufacturing standard GB/T2238-1989
Flange Connecting Dimension standard GB/T9113.1-2000;GB/T9115.1-2000;JB78
Face to Face standard GB/T12221-1989
Pressure Test standard GB/T13927-1992;JB/T9092-1999

Actuator 

Pneumatic wafer butterfly valve utilizes GT pneumatic actuator, having double-acting and single-acting (spring reset). It is driven by gear, safe and reliable. Large diameter valve utilizes AW pneumatic actuator. It has reasonable structure, large torque output, double-acting and single-acting.

1. Gear dual piston, large output torque, small volume

2. Cylinder, made of aluminum gold, has lightweight and beautiful form.

3. The manual handle can be installed on the top or at the bottom.

4. Gear connection can regulate opening angle and rated flow.

5. The actuator can be attached to an electric signal indication or other attachment to realize automation.

6. ISO05211 standard connection plate makes the production installation and changes more easily.

Options for accessories:

Accessories based on different control or requirements

Cut off accessories: single solenoid valve, double solenoid valve, limit switch echo

Regulated accessories: electric positioner, pneumatic positioner, electric converter

Air supply treatment accessories: air filtrating pressure reducing valve, air supply FRL

Manual handle: HVSD manual handle

Pneumatic Wafer Butterfly Valve Technical Data

Nominal diameter DN(mm) 50~2000
Nominal pressure PN(MPa) 0.6 1.0 1.6
Test pressure Shell test 0.9 1.5 2.4
Seal  test 0.66 1.1 1.76
Air test 0.6 0.6 0.6
Applicable medium Air, water, sewage, vapor, gas, oil, etc
Driving mode Manual, worm gear, pneumatic, electric

Pneumatic Wafer Butterfly Valve Material

Components Materials
Valve body Spheroidal graphite steel, cast steel, alloy steel, stainless steel
disc Grey cast iron, spheroidal graphite steel, cast steel, stainless steel, special materials
Seal ring Rubber, PTFE
Valve stem 2Cr13, stainless steel
Packing O-ring, flexible graphite

Seal material selection and applicable temperature

Materials Abbreviation Model Maximum temperature Minimum temperature Applicable temperature
Chloroprenerubber CR X or J 82℃ -40℃ 0~+80℃
Nitril butadiene rubber NBR XA or JA 93℃ -40℃ -20~+82℃
Ethylene propylene rubber EPDM XB or JB 150℃ -40℃ -40~+125℃
Teflon PTFE F, XC or JC 232℃ -268℃ -30~+150℃
Silicon Rubber SI XD or JD 250℃ -70℃ -70~+150℃
Fluorine Rubber VITON XE or JE 204℃ -23℃ -23~+150℃
Crude Rubber NR X1 85℃ -20℃ -20~+85℃
Nylon PA N 93℃ -73℃ -30~+93℃

Pneumatic Wafer Butterfly Valve Dimensions

Unit: mm

Nominal
diameter
Face to Face
Dimension
(standard value)
Outline
dimension
(reference value)
Connection dimension (standard value)
0.6MPa 1.0MPa 1.6MPa
Mm Inch L H H0 A B D0 n-d D0 n-d D0 n-d
50 2 43 63 315 180 65 110 4-14 125 4-18 125 4-18
65 21/2 46 70 330 180 65 130 4-14 145 4-18 145 4-18
80 3 46 83 390 245 72 150 4-18 160 8-18 160 8-18
100 4 52 105 431 240 72 170 4-18 180 8-18 180 8-18
125 5 56 115 455 240 72 200 8-18 210 8-18 210 8-18
150 6 56 137 626 350 93 225 8-18 240 8-22 240 8-22
200 8 60 164 720 350 93 280 8-18 295 8-22 295 12-22
250 10 68 206 800 550 350 335 12-18 350 12-22 355 12-26
300 12 78 230 860 600 350 395 12-22 400 12-22 410 12-26
350 14 78 248 883 600 350 445 12-22 460 16-22 470 16-26
400 16 102 289 972 600 350 495 16-22 515 16-26 525 16-30
450 18 114 320 1043 750 380 550 16-22 565 20-26 585 20-30
500 20 127 343 1098 750 380 600 20-22 620 20-26 650 20-33
600 24 154 413 1236 750 380 705 20-26 725 20-30 770 20-36
700 28 165 478 1431 750 380 810 24-26 840 24-30 840 24-36
800 32 190 525 1488 750 380 920 24-30 950 24-33 950 24-39

Please note that the above specifications are “general specifications” that pertain to the majority of our products. These specifications should only be used for general, informational purposes. The measurement/size of the goods delivered may be different from the data in the above table, please check with us when order placed.

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