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.
➣ Large diaphragm cover design
➣ Pressure regulating high precision.
➣ operated convenient
Temperature: -40℃ to ＋100℃(above 100℃ consult technical)
➣ Low maintenance cost, long maintenance interval, easy assembly and disassembly, simple seat seal inspection and few spare parts
Excellent control performance: Control high precision, fast response, good stability
➣ Compressed air pressure 0-7bar
➣ multiple pilot reducing valves available
| ➣ control range: 0-0.1, 0-0.4, 0-0.8, 0-1.5, 0-3bar |
| Safety Test Pressure: 1.5 times of max. Inlet pressure |
| Leak rate: Without gas leakage |
| Temperature Range: -40℃ to ＋100℃(above 100℃ can be custom) |
| Cv value: 2.6, 4.1, 6.6, 11, 13, 17, 75, 80, 120 |
| ➣ 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 |
| Bonnet: 304 |
| Diaphragm: NBR, VITON, PTFE, EPDM, PEEK |
| Valve Seat: NBR, VITON, PTFE, PEEK |
| Spring: 304 |
| Plug Stem: 304, 316L |
| O-ring: NBR, EPDM, Viton, PTFE, RPTFE |
| Models | Size | Ports thread / flange | Cv value |
| Thread pilot back pressure valve XRLBT Flange pilot back pressure valve XRLBF |
DN15 | 1/2" | 2.6 |
| DN20 | 3/4" | 4.1 | |
| DN25 | 1" | 6.6 | |
| DN32 | 1-1/4" | 11 | |
| DN40 | 1-1/2" | 13 | |
| DN50 | 2" | 17 | |
| DN65 | 2.5" | 75 | |
| DN80 | 3" | 80 | |
| DN100 | 4" | 120 |
| Ordering GuideORDERING INFORMATION | |||||||
| Series | Material | Thread ports | Inlet pressure | Control pressure | Pressure Gauges | ||
| XRLBT thread pilot back pressure valve XRLBF flange pilot back pressure valve |
G | G | |||||
|
S:304 L:316L CF: PTFE-lined |
1/2"(15) 3/4"(20) 1"(25) 1-1/4"(32) 1-1/2"(40) 2"(50) 2.5"(65) 3"(80) 4"(100) |
G:0.3Mpa D:0.6Mpa F:1Mpa |
F:0-0.1bar G:0-0.4bar H:0-0.8bar K:0-1.5bar L: 0-3bar |
W: Without pressure gauge G: With pressure gauge (MPa) P: With pressure gauge (Psig/bar) |
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