If the flow of some high-pressure pumps varies strongly with pressure, a back pressure valve can be installed at the pump outlet, keeps the pump output flow stable, in this case the back pressure valve is normally set to the pump working pressure or slightly below it. The check valve on the outlet line prevents backflow of liquid, the back pressure valve maintains a constant pressure at the pump outlet.
● Piston type structure, used for high pressure tubing
● 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
| ➣ control pressure control range: 0-30kpa, 0-60kpa, 0-100kpa, 0-3bar, 0-7bar, 0-10bar |
| Safety Test Pressure: 150% max. Rated pressure |
| Temperature Range: -40℃ to ＋100℃(above 100℃ consult technical) |
| Internal Leakage Rate: Without gas leakage |
| Cv value: 0.6, 1.2, 2, 2.6, 3.8, 5.1, 8, 11, 13, 17, 25, 36, 50, 75 |
| Body: 316L, 304, C276, TA2, PVDF, stainless steel pTFE-lined |
| O-ring: NBR, VITON, EPDM, PTFE |
| Valve Seat: PTFE, PCTFE, PEEK, Vespel, 316L |
| Spring: 316L |
| Plug Stem: 316L |
| Ordering GuideORDERING INFORMATION | |||||||
| Series models | Body material | Body port layout | Nominal Diameter (DN) | Connection RC/NPT | Control pressure | O-ring | Pressure Gauges |
| LHBF liquid back pressure valve |
L:316L S:304 C:C276 T:TA2 PD:PVDF CF: PTFE-lined |
A B |
6 32 8 40 10 50 15 65 20 80 25 100 |
1/8" 1.25" 1/4" 1.5" 3/8" 2" 1/2" 2.5" 3/4" 3" 1" 4" Flanged connection available on request, code:F |
K:0-2Mpa I:0-3Mpa H:0-4Mpa G:0-5Mpa Q:0-6Mpa N:0-10Mpa |
1.NBR 2.Viton 3.EPDM 4.PTFE |
G: With pressure gauge (MPa) P: With pressure gauge (psig/bar) W: Without pressure gauge |
