Griffco Pressure Relief Valves

Griffco offers a variety of back pressure valves and options that work in many different applications. There are three main types of back pressure valves:
  • M-Series: Low flow (1/4" to 1/2" or DN 8 to DN 15 connections)
  • G-Series: Medium to large flow (1/2" to 4" or DN 15 to DN 100 connections)
  • High Flow: High flow (1/2" to 1" or DN 15 to DN 25 connections)
Variations and Options Include:
  • NEW Unibody: Valve with union connections, made from a solid PVC or CPVC body
  • PTFE Flanged: G-Series valve with flange connections, made from a solid PTFE body
  • ARV: Air release valve acts as a priming valve for a back pressure valve
Standard Materials:
  • PP
  • PVC
  • CPVC
  • PVDF
  • TFE
  • Halar®
  • 316SSL
  • Alloy 20
  • Hastelloy® C
Standard Connections:
  • Threaded
  • Flanged
  • Union
  • Socket
Spring Ranges:
  • 10 to 150 psi (1 to 10 bar) standard
  • 0 to 50 psi (0.0 to 3.5 bar)
  • 10 to 250 psi (1 to 17 bar)
  • 50 to 350 psi (3.5 to 25 bar)

Diaphragm Materials:
  • EPDM/PTFE (standard)
  • FKM (Viton®)
  • CSM (Hypalon®)
  • PTFE/FKM
  • Kalrez®
Configurations:
  • 180˚ ports (standard)
  • 90˚
  • Wall mount
Options:
  • Priming port
  • Adjustment knob
  • Metal tops
  • Metal adjustment screw
  • Material certifications

 

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