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.
● Body and diaphragm adopts hard sealed type
● Body thread 1/4''-1''NPT(F)
● Can be controlled remotely, and other control modes including pneumatic control
● Compressed air pressure 0-7bar, sensitive operation, high precision
● Laboratory
● Gas analysis
● Fluid control
● Petrochemical industry
● Test equipment
| Max. Inlet Pressure: 400Psig |
| ➣ control pressure: 0~20, 0~50, 0~125, 0~200, 0~250psig, 400Psig, |
| Safety Test Pressure: 150% max. Rated pressure |
| Temperature Range: -40℃ to ＋100℃(above 100° consult technical) |
| Leak rate: Without gas leakage |
| Cv value: 2, 3.2, 4, 5, 7.3, 11 |
| ➣ air control ratio 1:1 to 1:100 |
| ➣ linearity: Within ±5% F.S |
| ➣ sensitivity: Within ±3% F.S |
| ➣ accuracy: Within ±5% F.S |
| Valve Body: 316L, 304, Brass, C276, TA2, PVDF, stainless steel pTFE-lined |
| Bonnet: 304 |
| Diaphragm: NBR(nylon lined), Viton(nylon lined), 316L, PTFE |
| Valve Seat: PTFE, PEEK, Vespel |
| Spring: 316L |
| Plug Stem: 316L |
| O-ring: NBR(nitrile rubber), EPDM rubber, chemraz or Viton |
| Ordering GuideORDERING INFORMATION | |||||||
| Series models | Body material | Body port layout | Inlet Pressure | Pressure Gauges | Inlet gas type | Outlet gas type | Options |
| ATY74 air operated back pressure valve |
L | A | G | G | 6 | 6 | P |
|
L:316L B:Brass S:304 C:C276 T:TA2 P:PVDF CF: PTFE-lined |
A B |
L:0-20psig K:0-50psig I:0-125psig H:0-200psig G:0-250psig D:0-400psig |
G: With pressure gauge (Mpa) P: With pressure gauge (psig/bar) W: Without pressure gauge |
04:1/2NPT(F) 06:3/4NPT(F) 08:1"NPT(F) 10:1-1/4"NPT(F) 12:1-1/2"NPT(F) 14:2"NPT(F) Other fitting types available |
04:1/2NPT(F) 06:3/4NPT(F) 08:1"NPT(F) 10:1-1/4"NPT(F) 12:1-1/2"NPT(F) 14:2"NPT(F) Other fitting types available |
P: Panel-mount mounting | |
