Pressure Relief/Sustaining Valve IR-430-55

The BERMAD Model IR-430-55 is a hydraulically operated, diaphragm actuated control valve that can fulfill either of two separate functions. When installed in-line, it sustains minimum preset upstream (back) pressure. When installed as a relief or circulation valve, it relieves line pressure in excess of preset. The BERMAD Model IR-430-55 either opens or shuts in response to an electric signal.

Product Features & Benefits
    • Line Pressure Driven PSV Electrically Controlled On/Off
        • Controls system fill-up


        • Relieves excessive pressure protecting pump and system


        • Switches between pressure regimes


        • Wide range of pressures and voltages




    • Advanced Globe Hydro-Efficient Design
        • Unobstructed flow path


        • Single moving part


        • High flow capacity




    • Fully Supported & Balanced Diaphragm
        • Requires low actuation pressure


        • Excellent low flow regulation performance


        • Progressively restrains valve closing


        • Prevents diaphragm distortion




    • Simple In-Iine Inspection and Service


Typical Product Applications

Typical Applications

  • Downhill Supply Lines Emptying Prevention
  • Systems with Various Pressure Regimes
  • Line Fill-Up Control
  • Backup for Reservoir Supply Valves
  • Pump Overload and Cavitation Protection
  • Pump Minimum Flow Safeguard
  • Excessive Line Pressure Protection