CORROSION-RESISTANCE FOR CHEMICAL APPLICATIONS
Back pressure valve is used to prevent liquid from flowing or siphoning due to Gravitation. At this time, the back pressure valve can reduce the flow due to siphon and control the pressure fluctuations.
The stainless steel back pressure valves are widely used in chemical industry, water treatment, laboratory etc., also our back pressure valves are suitable for air and various kind of corrosive liquids.
| Connection type | Thread, flange etc. and can be customized |
| Adjustable pressure | 0-0.3MPa，0-1.0MPa |
| Safety test pressure | 1.5 times the maximum input pressure |
| Applicable temperature | -5℃ to +80℃ for EPDM lining PTFE diaphragm -5℃ to +80℃ for PTFE diaphragm |
| Available materials | |
| Materials for Lower valve body | PVC,SS304,SS316L,PTFE,PVDF,PP,carbon steel etc |
| materials for diaphragm | EPDM lining PTFE diaphragm，PTFE diaphragm |
| Material for upper valve body | PVC,carbon steel(nickel plated,black oxide etc.), SS304,SS316L |
Key features of back pressure valves
- With Diaphragm structure spring and the pressure will be adjustable
- The medium contacting parts are only the lower valve body and the diaphragm and they are assembled with sealing rib which has good sealing effect and high sensitivity
- EPDM lining PTFE with Cloth type diaphragm has a very good sealing effect and long service life, The PTFE type diaphragm has a very good performance in high temperature resistance corrosion resistance.
Specifications and models
| Models | Material | Dia（mm） | Pressure（MPa） | Size | Connection | |
| D(mm)Lower valve body | H(mm) | |||||
| RXBF-P6/1.0 | PVC | 6 | 0.1-1.0 | 64.7 | 82 | Rc1/8” |
| RXBF-P8/1.0 | PVC | 8 | 0.1-1.0 | 64.7 | 87 | Rc1/4” |
| RXBF-P10/1.0 | PVC | 10 | 0.1-1.0 | 64.7 | 89 | Rc3/8” |
| RXBF-P15/1.0 | PVC | 15 | 0.1-1.0 | 64.7 | 94 | Rc1/2” |
| RXBF-P20/1.0-N | PVC | 20 | 0.1-1.0 | 64.7(for pumps flow≤250L/h) | 104 | Rc3/4” |
| RXBF-P20/1.0 | 87 | 123 | ||||
| RXBF-P25/1.0 | PVC | 25 | 0.1-1.0 | 87 | 128 | Rc1” |
| RXBF-P32/1.0 | PVC | 32 | 0.1-1.0 | 117 | 175 | Rc1+1/4” |
| RXBF-P40/1.0-N | PVC | 40 | 0.1-1.0 | 117(for pumps flow≤2500L/h) | 185 | Rc1+1/2” |
| RXBF-P40/1.0 | 137 | 240 | ||||
| RXBF-P50/1.0 | PVC | 50 | 0.1-1.0 | 167 | 260 | Rc2” |
| RXBF-P65/1.0 | PVC | 65 | 0.1-1.0 | 177 | 325 | Rc2+1/2” |
| RXBF-P80/0.6 | PVC | 80 | 0.1-0.6 | 230 | 420 | Rc3” |
| RXBF-P100/0.6 | PVC | 100 | 0.1-0.6 | 250 | 430 | Rc4” |
| RXBF-S6/1.0 | SUS304/316L | 6 | 0.1-1.0 | 64.7 | 82 | Rc1/8” |
| RXBF-S8/1.0 | SUS304/316L | 8 | 0.1-1.0 | 64.7 | 87 | Rc1/4” |
| RXBF-S10/1.0 | SUS304/316L | 10 | 0.1-1.0 | 64.7 | 89 | Rc3/8” |
| RXBF-S15/1.0 | SUS304/316L | 15 | 0.1-1.0 | 64.7 | 94 | Rc1/2” |
| RXBF-S20/1.0-N | SUS304/316L | 20 | 0.1-1.0 | 64.7(for pumps flow≤250L/h) | 104 | Rc3/4” |
| RXBF-S20/1.0 | 87 | 123 | ||||
| RXBF-S25/1.0 | SUS304/316L | 25 | 0.1-1.0 | 87 | 128 | Rc1” |
| RXBF-S32/1.0 | SUS304/316L | 32 | 0.1-1.0 | 117 | 175 | Rc1+1/4” |
| RXBF-S40/1.0-N | SUS304/316L | 40 | 0.1-1.0 | 117 | 185 | Rc1+1/2” |
| RXBF-S40/1.0 | 137 | 240 | ||||
| RXBF-S50/1.0 | SUS304/316L | 50 | 0.1-1.0 | 167 | 260 | Rc2” |
| RXBF-S65/1.0 | SUS304/316L | 65 | 0.1-1.0 | 177 | 325 | Rc2+1/2” |
| RXBF-S80/0.6 | SUS304/316L | 80 | 0.1-0.6 | 225 | 420 | 3”flange type |
| RXBF-S100/0.6 | SUS304/316L | 100 | 0.1-0.6 | 240 | 430 | 4”flange type |
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