Relief & Back Pressure Valves

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  • Plast-O-Matic RVD Relief Valve

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    Plast-o-matic® type RVD valves are angle pattern, compact, economical, and ideal for low through high pressure applications. They feature a single flat diaphragm which is an advantage where salt crystallization problems can cause valve sticking. Relief setting is infinitely adjustable from 5 to 150psi.

    Data Sheet
  • Plast-O-Matic RVDM Relief Valve

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    Plast-o-matic® type RVDM in-line pressure relief valves eliminate crystallization problems and offer smooth, sensitive operation for corrosive and high purity liquids. They feature a primary rolling diaphragm and a secondary flat diaphragm which incorporates the Plast-o-matic patented Fail-Dry design for added protection. They are not recommended for applications with vacuum or back pressure on the outlet.

    Data Sheet
  • Plast-O-Matic RVDT/RVDTM Relief Valve

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    Plast-o-matic® type RVDT & RVDTM valves come in thermoplastic or metal for smooth, sensitive operation and the ultimate in corrosion resistance with no wetted elastomers. They can function as an all-purpose back pressure valve in many different applications such as relief, by-pass, back pressure regulators, back pressure valves, or anti-siphon.

  • Plast-O-Matic RVT Relief Valve

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    Plast-o-matic® type RVT valves are angle pattern valves with high pressure and flow rates. They feature a PTFE shaft that prevents chatter and sticking, a triple U-cup seal that isolates the spring and provides added safety, and no wetted metal parts. Patented Fail-Dry® advance warning vent allows maintenance to be scheduled conveniently without costly shut down. The angle pattern offers compact size and convenient piping.

    Data Sheet
  • Plast-O-Matic RVTX Relief Valve

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    Plast-o-matic® type RVTX valves are super high performance 3″ relief valves. They feature a large area rolling diaphragm that provides precise, sensitive operation, heavy-duty industrial construction, and no wetted metal parts. The angle pattern offers compact size and convenient piping. They are ideal for use with liquids that crystallize.

    Data Sheet
  • Plast-O-Matic TRVDT Relief Valve

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    Plast-o-matic® type TRVDT three way bypass valves offer high flow relief with 3 port design and are ideal for applications where minimal footprint is required or where use of a piping tee is impractical. The valve has a straight-through flow pattern when closed. When set point is exceeded, the diaphragm is lifted off the center port, and excess flows down and out through the third port at the bottom of the valve.

    Data Sheet