The carbon steel back pressure valve we produce adopts forging technology. Compared with other materials, carbon steel has a heavier weight and a sense of condensation, so carbon steel back pressure valves have good pressure resistance and excellent durability, with a long service life. Our carbon steel back pressure valve surface is treated with spray coated, nickel plated or black oxide, so it has good corrosion resistance and can withstand the erosion of various chemical substances, suitable for various liquid environments. Widely used in important industrial fields such as petroleum, chemical, power, metallurgy, etc.
Basic information of carbon steel Series Back Pressure Valves
Diaphragms: PTFE composite NBR,EPDM etc.
Material for upper valve body: Carbon steel with spray treatment or customized
Material for lower valve body: Carbon steel with nickel plated, black oxide etc.
Adjustable pressure: 0-1.0MPa,0-2Mpa
Connection type: Thread,Flange and can be customized
Model of Carbon Steel Back Pressure Valve
| Model | Material | Nominal Dia. (mm) | Setting Pressure (MPa) | Dimension | Standard connection | |
|---|---|---|---|---|---|---|
| Lower Valve Body Dia. (mm) | Total Height (mm) | |||||
| RXBF-A6/1.0 | Carbon steel | 6 | 0.1-1.0 | 64.7 | 82 | Rc1/8” |
| RXBF-A8/1.0 | Carbon steel | 8 | 0.1-1.0 | 64.7 | 87 | Rc1/4” |
| RXBF-A10/1.0 | Carbon steel | 10 | 0.1-1.0 | 64.7 | 89 | Rc3/8” |
| RXBF-A15/1.0 | Carbon steel | 15 | 0.1-1.0 | 64.7 | 94 | Rc1/2” |
| RXBF-A20/1.0-N | Carbon steel | 20 | 0.1-1.0 | 64.7 | 104 | Rc3/4” |
| RXBF-A20/1.0 | Carbon steel | 20 | 0.1-1.0 | 87 | 123 | Rc3/4” |
| RXBF-A25/1.0 | Carbon steel | 25 | 0.1-1.0 | 87 | 128 | Rc1” |
| RXBF-A32/1.0 | Carbon steel | 32 | 0.1-1.0 | 117 | 175 | Rc1 1/4” |
| RXBF-A40/1.0-N | Carbon steel | 40 | 0.1-1.0 | 117 | 185 | Rc1 1/2” |
| RXBF-A40/1.0 | Carbon steel | 40 | 0.1-1.0 | 137 | 240 | Rc1 1/2” |
| RXBF-A50/1.0 | Carbon steel | 50 | 0.1-1.0 | 167 | 260 | Rc2” |
| RXBF-A65/1.0 | Carbon steel | 65 | 0.1-1.0 | 177 | 325 | Rc2 1/2” |
| RXBF-A80/0.6 | Carbon steel | 80 | 0.1-0.6 | 225 | 420 | 3” flanged |
| RXBF-A100/0.6 | Carbon steel | 100 | 0.1-0.6 | 240 | 430 | 4” flanged |
| Other unspecified model/material/connection and DN100 above can be customized according to requirement. | ||||||
The Back Pressure Valve functions as an anti-siphon valve, preventing liquid flow or siphoning due to gravity. Additionally, the valve can decrease flow due to siphoning and regulate pressure fluctuations. Anti-siphon valves only permit water to flow in one direction.
Design features:
- With Diaphragm structure spring and the pressure can be adjustable.
- The wetted 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.
- Multiple materials of diaphragm are optional to meet the usage of different environments and scenarios.
| Technical Parameters | |
| Connection type | Thread, flange etc. and can be customized |
| Adjustable pressure | 0-1.0MPa, 0-2.0MPa |
| Safety test pressure | 1.5 times the maximum input pressure |
| Applicable temperature | -60℃ to +300℃ (customizable） |
| Available materials | |
| Materials for Lower valve body | PVC,SS304,SS316L,Hastelloy, PTFE,PVDF,PP, carbon steel etc.and can be customized |
| materials for diaphragm | PTFE composite NBR,EPDM etc. |
| Material for upper valve body | Nylon,PVC, carbon steel , SS304,SS316L etc.and can be customized |
