The air-operated back pressure valve adjusts back pressure by controlling the compressed air pressure, controlling the upstream fluid pressure. Pressure can be set anywhere within the adjusting range, continuous control, achieving continuous, stepless back pressure regulation, supports remote, pneumatic and other control modes, Upstream back pressure is controlled by air pressure, may be equal, or varied at a set ratio, air control ratio 1: 1 to 1:100. Air-operated back pressure valves suit applications requiring remote and precise pressure control.
● Provides a pressure differential on both sides of the back pressure valve piping
● Prevents siphoning, Eliminates dosing variations caused by pressure fluctuations at the injection point
● Used together with pulse dampers to reduce water-hammer damage to the system
● Protects piping, elbows and fittings, reduces the impact of pressure fluctuations
● Delivers its full effect only when used with other line components such as pulse dampers
● Can be controlled remotely, and other control modes including pneumatic control
● Compressed air pressure 0-7bar
● Sensitive operation, high precision
| ➣ control pressure control range: 0-0.3, 0-0.6, 0-0.8, 0-1.0mPa |
| Safety Test Pressure: 150% max. Rated pressure |
| Temperature Range: -40℃ to ＋100℃(above 100℃ consult technical) |
| Internal Leakage Rate: Without gas leakage |
| Cv value: 0.8, 1.2, 2.7, 4.2, 6.7, 10, 12, 16 |
| ➣ air control ratio 1:1 to 1:100 |
| ➣ linearity: Within ±5% F.S |
| ➣ sensitivity: Within ±3% F.S |
| ➣ accuracy: Within ±5% F.S |
| Body: 316L, 304, stainless steel pTFE-lined |
| Diaphragm: 316L, C276, PTFE, NBR, VITON, EPDM, PEEK, PTFE composite diaphragm |
| O-ring: NBR, VITON, EPDM, PTFE, RPTFE |
| Valve Seat: PTFE, PCTFE, PEEK, Vespel, 316L |
| Spring: 316L |
| Plug Stem: 316L |
| Ordering GuideORDERING INFORMATION | |||||||
| BF series models | Body material | Size | Thread / flange | Control pressure(mPa) | Pressure Gauges | ||
| ABF air operated back pressure valve |
L:316L S:304 CF: PTFE-lined |
1/4" 3/8" 1/2" 3/4" 1" 1-1/4"(32) 1-1/2"(40) 2"(50) |
T: Thread F: Flange |
0.3 0.6 0.8 1.0 |
W: Without pressure gauge | ||
| Ordering GuideORDERING INFORMATION | |||||||
| AF series models | Body material | Size | Thread / flange | Control pressure(mPa) | Pressure Gauges | ||
| ASF air operated relief valve |
L:316L S:304 CF: PTFE-lined |
1/4" 3/8" 1/2" 3/4" 1" 1-1/4"(32) 1-1/2"(40) 2"(50) |
T: Thread F: Flange |
0.3 0.6 0.8 1.0 |
W: Without pressure gauge | ||
