Pneumatic Wafer Butterfly Valve

Pneumatic Wafer Butterfly Valve Click to view the big picture
Short Description
 Model No.: D671X    Hits: 1168
China Butterfly Valve manufacturer Xinhai offers Pneumatic Wafer Butterfly Valves in DN50-2000, spheroidal graphite steel, cast steel, alloy steel.

Key Specifications / Features

Pneumatic wafer butterfly valve consists of 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 install in any position and it is convenient maintain.
4. Seal can be replaced and realize bidirectional sealing and zero leakage.
5. Aging resistance, corrosion resistance and long service life.
Standards
Manufacturing standard: GB/T2238-1989
Flange connecting dimension: GB/T9113.1-2000;GB/T9115.1-2000;JB78
Face to face standard: GB/T12221-1989
Pressure test: 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 drove 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 light weight and beautiful form.
3. Manual handle can be installed on the top or at the bottom.
4. Gear connection can regulate opening angle and rated flow.
5. Actuator can ba attached with electric signal indication or other attachment to realize automation.
6. ISO05211 standard connection plate makes the production installation and change more easily. 
 
 
Options of 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
 
Main Technical Parameter
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

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

Dimensions 
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

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