The pilot back pressure valve controls main-valve upstream pressure by adjusting the regulator outlet 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 the regulator outlet pressure, may be equal, or varied at a set ratio, air control ratio 1: 1 to 1:100. Pilot-operated back pressure valves suit applications requiring remote and precise pressure control.
● Single-stage pressure reducing structure
● Body and diaphragm adopts hard sealed type
● Pressure Gauges,Safety ValvesPorts 1/4〞NPT(F)
● Built-in filter screen
● Panel or wall mounting available
● Can be controlled remotely, and other control modes including pneumatic control
● Compressed air pressure 0-7bar, sensitive operation, high precision
● Multiple pilot reducing valves available
● Laboratory
● Gas purge system
● Corrosive gases and special gases
● Low positive gas pressure service
● Test equipment
| ➣ control pressure:0～10, 0～25, 0～50, 0～100, 0～200kPa |
| Safety Test Pressure: 150% max. Rated pressure |
| Temperature Range: -40℃ to ＋100℃(above 100℃ consult technical) |
| Internal Leakage Rate: 2×10-8atmcc/secHe |
| Cv value: 0.2, 0.6, 1.2, 2.4, 3.2,, 5.1, 11, 17 |
| ➣ 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, C276, TA2, PVDF, PTFE, stainless steel pTFE-lined |
| Bonnet: 304 |
| Diaphragm: NBR, VITON, 316L, C276, PTFE, EPDM, PEEK |
| Filter Screen: 316L(10μm) |
| Valve Seat: PCTFE, PTFE, NBR, PEEK, Vespel, 316L |
| Spring: 316L |
| Plug Stem: 316L |
| Ordering GuideORDERING INFORMATION | |||||||
| Series models | Body material | Body port layout | Control pressure | Pressure Gauges | Inlet gas type | Outlet gas type | Options |
| XTY78 pilot back pressure valve |
L | A | G | G | OO | OO | P |
|
L:316L S:304 C:C276 T:TA2 PD:PVDF PF:PTFE CF: PTFE-lined |
A B |
E:200KPA G:100KPA H:50KPA K:25KPA L:10KPA Ultra micro pressure HLTY78 N:2KPA M:5KPA |
G: With pressure gauge (KPa) W: Without pressure gauge |
00:1/4NPT(F) 02:3/8NPT(F) 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 |
00:1/4NPT(F) 02:3/8NPT(F) 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 | |
