Southwest Irrigation, LLC
Southwest Irrigation is the leading supplier for Heap Leach Mining Systems and Agricultural Irrigation Systems in the southwest.

Pressure Relief/Sustaining Valve

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.

Features and 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 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



  Office 520-384-9223
401 E Maley
Willcox, AZ 85643
Mining Orders:
Agricultural Orders: