Product details
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High-Flow Back Pressure Valves
Griffco High-Flow diaphragm back pressure valves are designed to enhance the performance of chemical feed systems by applying a continuous back pressure to the chemical feed pump, while also acting as an anti-syphon valve. Larger orifice size makes the valves ideal for use with higher viscosity fluids.
Features & Benefits
Valve Features
- Anti-siphon function
- Solid, robust, machined construction
- Flanged, union, threaded and socket connection options
- Molded Noryl top with integral hardware locking
- 316L SS metal valve and top options
- Molded PTFE/EPDM diaphragm
- Adjustable up to 250 psi (17 bar)
- 4 optional pressure ratings (springs)
- Valve sizes from 1/2" to 2" or DN 15 to DN 50
- Tamper-resistant adjustment screw
- High-temperature option up to 300°F (149°C)
Griffco Benefits
- High reliability at affordable price
- Long diaphragm life
- Wide range of valve materials
- Multiple diaphragm material options
- Factory or field settable
Additional Notes
Available Sizes
- 1/2", 3/4", 1", 1-1/2" & 2"or DN 15, DN 20, DN 25, DN 40 & DN 50
Wetted Materials
- PVC
- CPVC
- Polypropylene
- PVDF
- PTFE
- 316L SS
- Alloy 20
- Hastelloy® C
Performance
| MPN | Size (Inch) | Size (Metric) | Max Flow Pulsating (GPH) |
Max Flow Pulsating (LPH) |
Max Flow Continuous (GPM) |
Max Flow Continuous (LPM) |
Max Pressure (PSI) | Max Pressure (BAR) |
|---|---|---|---|---|---|---|---|---|
| BPHF-050 | 1/2" | DN 15 | 600 | 2,271 | 30 | 114 | 250 | 17 |
| BPHF-075 | 3/4" | DN 20 | 600 | 2,271 | 30 | 114 | 250 | 17 |
| BPHF-105 | 1" | DN 25 | 1,000 | 3,785 | 54 | 204 | 250 | 17 |
| BPHF-150 | 1 1/2" | DN 40 | 5,157 | 19,521 | 270 | 1,020 | 250 | 17 |
| BPHF-200 | 2" | DN 50 | 5,157 | 19,521 | 270 | 1,020 | 250 | 17 |
Chemical Compatibility
Exploded view
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