High-Pressure Relief Valves
Griffco High-Pressure Relief Valves are designed to protect chemical feed systems from over pressure damage caused by defective equipment or a blockage in the chemical feed chemical feed line. Robust construction ensures reliability in the rigorous service of municipal and industrial applications. Also known as high-pressure pump bypass valves.
Valve Features
- Pressure range 350 to 4000 psi (24 to 275 bar)
- 2-port, 90° configuration
- PVDF piston
- Solid, robust, machined construction
- Threaded and socket connection options
- 316 SS top standard
- Composite PTFE/EPDM diaphragm
- Valve sizes from 1/4" to 1" or DN 8 to DN 25
- 4 optional pressure ratings (springs)
- Tamper-resistant adjustment screw
- High-temperature option up to 300°F (149°C)
Griffco Benefits
- High reliability at affordable price
- Compact size for OEM applications
- Multiple diaphragm material options
- Long diaphragm life
- Factory or field settable
Available Sizes
- 1/4", 3/8", 1/2", 3/4" & 1" or DN 8, DN 10, DN 15, DN 20 & DN 25
Wetted Materials
- 316 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) PRHP-025 1/4" DN 8 700 / 830 / 1050 2650 / 3141 / 3974 35 / 44 / 56 132 / 166 / 211 2000 / 2500 / 4000 138 / 172 / 275 PRHP-038 3/8" DN 10 700 / 830 / 1050 2650 / 3141 / 3974 35 / 44 / 56 132 / 166 / 211 2000 / 2500 / 4000 138 / 172 / 275 PRHP-050 1/2" DN 15 700 / 830 / 1050 2650 / 3141 / 3974 35 / 44 / 56 132 / 166 / 211 2000 / 2500 / 4000 138 / 172 / 275 PRHP-075 3/4" DN 20 1200 / 1340 / 1650 4542 / 5072 / 6245 60 / 70 / 86 227 / 264 / 325 2000 / 2500 / 4000 138 / 172 / 275 PRHP-100 1" DN 25 1200 / 1340 / 1650 4542 / 5072 / 6245 60 / 70 / 86 227 / 264 / 325 2000 / 2500 / 4000 138 / 172 / 275
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