Product details
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High-Flow Pressure Relief Valves
Griffco High-Flow diaphragm pressure relief valves are designed to protect chemical transfer systems from over pressure damage caused by defective equipment or a blockage in the chemical feed chemical feed line. Large orifice sizes facilitate high flows and higher viscosity fluids.
Features & Benefits
Valve Features
- Higher flow / lower pressure drop
- Large orifice for high-viscosity fluids
- 2-port design
- Vent-able to suction line
- Solid, robust, machined construction
- Flanged and socket connection options
- Molded Noryl top with integral hardware locking
- Composite PTFE/EPDM diaphragm
- Adjustable up to 250 psi (17 bar)
- 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
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) |
|---|---|---|---|---|---|---|---|---|
| PRHF-050 | 1/2" | DN 15 | 600 | 2,271 | 30 | 114 | 250 | 17 |
| PRHF-075 | 3/4" | DN 20 | 600 | 2,271 | 30 | 114 | 250 | 17 |
| PRHF-105 | 1" | DN 25 | 1,000 | 3,785 | 54 | 204 | 250 | 17 |
| PRHF-155 | 1 1/2" | DN 40 | 5,157 | 19,521 | 270 | 1,022 | 250 | 17 |
| PRHF-200 | 2" | DN 50 | 5,157 | 19,521 | 270 | 1,022 | 250 | 17 |
Dimensional drawings
Exploded view
Call or text: +1 (484) 544-0506
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