LRBT/LRBF balanced series liquid back pressure valve, adopts balanced double-piston design, stabilises upstream pressure, smoother pressure control, control high precision, quick response, used for liquid tubing. Widely used where high flow capacity, high reliability, wide pressure range and high accuracy are required.
➣ Balanced double-piston design
➣ control high precision
➣ operated convenient
➣ 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
| ➣ control range: 1-4, 4-8, 8-12, 12-16, 16-22bar |
| Safety Test Pressure: 1.5 times of max. Inlet pressure |
| Temperature Range: -40℃ to ＋100℃(above 100℃ consult technical) |
| Leak rate: 2×10-8atmcc/secHe |
| Cv value: 2.6, 4.1, 6.6, 11, 13, 17, 75, 80, 120 |
| Body: 316L, 304, stainless steel pTFE-lined |
| Bonnet: 304 |
| 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 |
| Threaded back pressure valve LRBT Flanged back pressure valve LRBF |
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 | ||
| LRBT thread liquid back pressure valve LRBF flange liquid back pressure valve |
L:316L S:304 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) Others available on request |
G:1Mpa D:2Mpa F:3Mpa |
G:1-4bar H:4-8bar K:8-12bar L:12-16bar M:16-22bar |
W: Without pressure gauge G: With pressure gauge (MPa) P: With pressure gauge (Psig/bar) |
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