Bermad IR-423-55-KX Pressure Reducing and Sustaining Valve



Pressure Reducing and Sustaining Valve IR-423-55-KX

The Bermad Model IR-423-55-KX is a hydraulically operated, diaphragm actuated control valve that sustains minimum preset upstream (back) pressure and reduces downstream pressure to a constant preset maximum. It either opens or shuts in response to an electric signal.


  • Computerized Irrigation Systems
  • Line Fill-Up Control Solutions
  • Pressure Reducing Systems
  • Remote and/or Elevated Plots
  • Infield Filter Backwash Pressure Sustaining
  • Systems Subject to Varying Supply Pressure
  • Distribution Centers


  • Line Pressure Driven, Electrically Controlled On/Off
    • Protects downstream system
    • Prioritizes pressure zones
    • Controls system fill-up
    • Sustains upstream line pressure
  • AdvancedGlobeHydro-EfficientDesign
    • 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
  • User-FriendlyDesign
    • Easy pressure setting
    • Simple in-line inspection and service


The Pressure Reducing Pilot (PRP) is hydraulically connected to the Valve Control Chamber through the Pressure Sustaining Pilot (PSP) and the Shuttle Valve. The PSP commands the Valve to throttle closed should Upstream Pressure drop below setting. When rises above setting, the PSP switches and allows the PRP to control the Valve, commanding it to reduce Downstream Pressure. In response to an electric signal, the

Solenoid switches and pressurizes the shuttle valve, which then blocks the pilots and transmits line pressure into the control chamber, shutting the Valve.


Pressure Reducing and Sustaining Valve IR-423-55-KX Pressure Reducing and Sustaining Valve IR-423-55-KX Brochure