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.
Metallic High-Pressure Relief 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
High-Pressure Relief Valves PRHP - Specifications
| Size | Maximum Flow | Maximum Pressure | |||||
| Pulsating | Continuous | ||||||
| Inch | Metric | GPH | LPH | GPM | LPM | PSI | BAR |
| 1/4" | DN 8 | 700 | 2,650 | 35 | 132 | 4,000 | 275 |
| 3/8" | DN 10 | 700 | 2,650 | 35 | 132 | 4,000 | 275 |
| 1/2" | DN 15 | 700 | 2,650 | 35 | 132 | 4,000 | 275 |
| 3/4" | DN 20 | 1,200 | 4,542 | 60 | 227 | 4,000 | 275 |
| 1" | DN 25 | 1,200 | 4,542 | 60 | 227 | 4,000 | 275 |
High Pressure PRHP - Data Sheets
High Pressure PRHP - IOM Manuals
High Pressure PRHP - Dimensional Drawings
High-Pressure 2-Port @ 90° (1/4" - 1/2") (DN 8 - DN 15)
High-Pressure 2-Port @ 90° (3/4" - 1") (DN 20 - DN 25)
High Pressure PRHP - Sectional Drawings
High Pressure PRHP - Exploded Views
GRIFFCO PRODUCTS
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The Griffco Commitment to You
Griffco strives to provide exceptional service and value to all its customers and employs talented professionals to ensure customer satisfaction.
Capabilities & Quality Certifications
Griffco Valve fully stands behind all the products it manufactures and sells. Find out more information about our quality certifications and organizations.
