Griffco PRMP-Series diaphragm 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 line. Robust construction ensures reliability in the rigorous service of municipal and industrial applications.
Available Sizes
1/4″ to 1″ or DN 8 to DN 25
Medium Pressure
Features
- Solid, robust, single-piece machined construction
- Anti-siphon function
- Available in 316 SS, A20, Hast. C and Titanium
- Adjustable up to 800 psi (55 bar)
- Valve sizes from 1/4″ to 1″ or DN 8 to DN 25
- Tamper-resistant adjustment screw
Griffco Benefits
- High reliability at an affordable price
- Long diaphragm life
- Multiple diaphragm material options

Wetted Materials
316 SS
A20
Hastelloy® C
Titanium
SIZE | MAXIMUM FLOW PULSATING | MAXIMUM FLOW CONTINUOUS | MAXIMUM PRESSURE |
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Image | Product | Description | Add to Project |
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Relief Valve – G-Series 316SS – 100 – 800 Pressure Range – Socket – 316SS Top | |||
Relief Valve – G-Series 316SS – 100 – 800 Pressure Range – 316SS Top – 600# Flanges | |||
Relief Valve – G-Series 316SS – 100 – 800 Pressure Range – 316SS Top – 90 Degree | |||
Relief Valve – G-Series 316SS – 100 – 800 Pressure Range – 316SS Top | |||
Relief Valve – G-Series Alloy 20 – 100 – 800 Pressure Range – 316SS Top – 90 Degree | |||
G-Series 316SS – 100 – 800 Pressure Range – 316SS Top | |||
G-Series 316SS – 100 – 800 Pressure Range – 316SS Top – 300# Flanges (Max rating 600 psi due to flanges) | |||
G-Series 316SS – 100 – 800 Pressure Range – 316SS Top – 600# Flanges | |||
G-Series 316SS – 100 – 800 Pressure Range – 316SS Top – PTFE/Viton – 300# Flanges (Max rating 600 psi due to flanges) | |||
G-Series 316SS – 100 – 800 Pressure Range – 316SS Top – Viton diaphragm |
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