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
| Title | Description | Date modified | Download |
|---|---|---|---|
| Data Sheet PRHP (US) | Imperial | 09-14-2020 | Download |
| Data Sheet PRHP (Spanish) | Metric | 09-14-2020 | Download |
High Pressure PRHP - IOM Manuals
| Title | Description | Date modified | Download |
|---|---|---|---|
| Manual PRHP (US) | Imperial | 05-21-2021 | Download |
| Manual PRHP (Spanish) | Metric | 05-21-2021 | Download |
High Pressure PRHP - Dimensional Drawings
High-Pressure 2-Port @ 90° (1/4" - 1/2") (DN 8 - DN 15)
| Title | Description | Date modified | Download |
|---|---|---|---|
| Dim PRHP90 2Port@90 Threaded US | 1/4" - 1/2" | 08-24-2020 | Download |
| Dim PRHP90 2Port@90 Threaded Metric | DN 8 - DN 15 | 08-24-2020 | Download |
High-Pressure 2-Port @ 90° (3/4" - 1") (DN 20 - DN 25)
| Title | Description | Date modified | Download |
|---|---|---|---|
| Dim PRHP2 2Port@90 Threaded US | 3/4" - 1" | 08-24-2020 | Download |
| Dim PRHP2F 2Port@90 Flanged US | 3/4" - 1" | 08-24-2020 | Download |
| Dim PRHP2F 2Port@90 Flanged Metric | DN 20 - DN 25 | 08-24-2020 | Download |
GRIFFCO PRODUCTS
Find Your Local Distributor
Try our New Pulsation Dampener Calculator
Protect your pumping system with the correct size Pulsation Dampener from Griffco Valve. Use the Griffco Pulsation Dampener Calculator.
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.
