Our back pressure valves made of PTFE are designed to prevent liquid from flowing or siphoning caused by gravity. They can effectively reduce flow due to siphon and regulate pressure fluctuations. Our valves find extensive usage in the chemical industry, water treatment plants, laboratories, and are compatible with air and a range of corrosive liquids.
| Technical Parameters: | |
| 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 |
| 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 |
The PTFE Back Pressure Valve's Design Features:
Equipped with a diaphragm structure spring and adjustable pressure
The lower valve body and diaphragm are the only parts that come in contact with the medium, and they are assembled with a sealing rib that provides excellent sealing and high sensitivity.
The EPDM-lined PTFE valve with a cloth-type diaphragm offers a long service life and excellent sealing, while the PTFE diaphragm has superior performance in high-temperature and corrosion resistance.
| 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 |
