HUAYU Technology (Energy)

Pressure Relief Valves (PRV)

Spring actuated pressure relief valves (PRV) are direct acting, relying on a system's hydraulic pressure to open when the spring’s preset force has been exceeded. When the inlet fluid pressure rises and overcomes the spring set pressure, the sealing device is lifted off its seat and discharges fluid to the outlet. When pressure falls below the setting, the sealing device moves back on to its seat and fluid passes downstream.

pressure relief valve


  • Direct acting, with repeatable usage
  • Seat made from high strength, corrosion resistant material
  • Lock-out tag identifies set pressure and prevent tampering with valve setting


Relief valves in 2-inch and 3-inch sizes for operating pressures up to 20,000 psi are available.

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