Griffco Valve, Inc.

Griffco G-Series Pressure Relief Valves

Griffco G-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.

Wetted Materials:

• PVC
• CPVC
• PP
• PVDF
• PTFE
• Halar®
• 316 SS
• Alloy 20
• Hastelloy® C

Available Sizes:

• 1/2" to 4" or DN 15 to DN 100

Features & Benefits:

• High reliability at a low cost
• Anti-siphon function
• 2-port and 3-port configurations (90° and 180°)
• Solid, robust, machined construction
• Wide range of materials
• Flanged, union, threaded and socket connection options
• Molded Noryl top with integral hardware locking
• 316L metal valve and top options
• Molded PTFE/EPDM diaphragm
• Multiple diaphragm material options
• Long diaphragm life
• Adjustable up to 350 psi (24 bar)
• 4 optional pressure ratings (springs)
• Valve sizes from 1/2" to 4" or DN 15 to DN 100
• Tamper-resistant adjustment screw
• High-temperature option up to 300°F (149°C)
• Factory or field settable

Download Technical Data Sheet: Imperial (US) | Metric (International)