Pneumatic Wafer Butterfly Valve
Pneumatic Wafer Butterfly Valve
Pneumatic Wafer Butterfly Valve
China Butterfly Valve manufacturer Xinhai offers Pneumatic Wafer Butterfly Valves in DN50-2000, spheroidal graphite steel, cast steel, alloy steel.
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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