Griffco Valve Inc.

- Model G-Series - Pressure Relief Valves

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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

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