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.
Available Sizes
1/2″, 3/4″, 1″, 1-1/2″, & 2″ or DN 15, DN 20, DN 25, DN 40 & DN 50
High-Flow
Features
- Higher flow / lower pressure drop
- Large orifice for high-viscosity fluids
- 2-port design
- Ventable 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 an affordable price
- Long diaphragm life
- Wide range of valve materials
- Multiple diaphragm material options
Wetted Materials
PVC
CPVC
Polypropylene
PVDF
PTFE
316L SS
Alloy 20
Hastelloy® C
| SIZE | MAXIMUM FLOW PULSATING | MAXIMUM FLOW CONTINUOUS | MAXIMUM PRESSURE |
Filters Sort results
Reset Apply
SKU | Product | Description | Add to Project |
|---|---|---|---|
 PRHF050T2V | Relief Valve – PTFE – 250 psi Spring – Viton | | |
| PRHF200K2VF | Relief Valve – PVDF – 250 psi Spring – Viton – Flanged (Max rating 220 psi) | | |
| PRHF200P | Relief Valve – PVC | | |
| PRHF200PP2 | Relief Valve – PP – 250 psi Spring | | |
| PRHF200S | Relief Valve – 316SS | | |
| PRHF200CP | Valve – CPVC | | |
| PRHF200PS | Relief Valve – PVC | | |
| PRHF075PPB | Relief Valve – PP – BSPT | | |
| PRHF075KB | Relief Valve – PVDF – BSPT | | |
 111-646-B | Relief Valve – 316SS – BSPT Threads | |
| TITLE | DESCRIPTION | DATE MODIFIED | DOWNLOAD |
