PRD Pressure Relief Valve

The PRD is our most popular pressure relief valve designed to protect dosing pumps, chemical feed and other closed-loop systems from damage and poor performance due to over-pressurization. The diaphragm-controlled PRD features a very simple proven design available even in very small nominal diameters. 

Available sizes: ¼” - 2” 
Body Materials: PVC, PP, PVDF, Stainless Steel
Seals:                EPDM, Viton, PTFE
Connections:    Spigot, Flange, True Union Socket or Spigot

The rugged construction and high quality spring of the PRD make it ideal for use with oscillating pumps and other applications with constant vibration. The tight-sealing PTFE-coated control diaphragm also make the PRD suitable for use with fluids containing some solid particles. 

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