Menu

Pressure Control & Relief Valves

The thermoplastic pressure relief valve protects equipment and systems against over-pressures or sudden pressure surges. Able to handle highly corrosive or ultra-pure liquids, the relief valve prevents pumps from dead-heading due to unexpected shut-offs downstream (also known as a bypass relief valve). It maintains back pressure in closed-loop systems to make pumps run more smoothly (also known as a back pressure valve).

Standard Sizes

1/4" - 4" diameter

Sizes and materials are brand specific. Click on a manufacturer below for available products. Please contact Aetna Plastics for pricing information.

To view material Corrosion Guides, visit our Technical Specifications page.

The General Application Diagram.pdf illustrates where valves are used in a flow system.

Manufacturers

Asahi/America

  • Size Range: 1/2" - 4"
  • Materials: PVC, PP, PVDF and PTFE
  • Products: Pressure Relief Type A and Type E, Frank Series Regulators
Georg Fischer

  • Size Range: 3/8" - 2"
  • Materials: PVC, CPVC, PP, & PVDF
  • Products: Pressure Reducing & Retaining Valves
Hayward

  • Size Range: 1/4" - 2"
  • Materials: PVC and CPVC
  • Products: Pressure Relief and Regulator Valves
Plast-O-Matic

  • Size Range: 1/4" - 3"
  • Materials: PVC, CPVC, PP, PVDF and PTFE
  • Products: Pressure Relief and Reducing Valves
RK Industries

  • Size Range: 1/4" - 4"
  • Materials: PVC, PP, PVDF and PTFE
  • Products: Pressure Relief and Regulator Valves