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Pressure Relief (PR) Line
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Pressure Relief (PR) Line
PR check valve

Check Valves with pressure relief (-PR)

Check valves fitted with a Pressure Relief (-PR) valve allow a few drops to back flow in case of a pressure increase (pressure range: 16-25 bar). This immediately relieves the pressure and prevents damage to the faucet.

Below 16 bar, the PR check valve operates as regular check valve in compliance with EN 13959. Applicable wherever high back pressure may occur in closed systems.

Typical applications

  • thermostatic mixer faucets undergoing external heat impact (e.g. via thermal disinfection procedures)
  • applications including solenoid valves