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Pressure Reducing and Sustaining Valve

The BERMAD Model IR-423-KXZ is a hydraulically operated, diaphragm actuated control valve that sustains minimum preset upstream (back) pressure and reduces downstream pressure to a constant preset maximum.

Features and Benefits

  • Line Pressure Driven, Hydraulically Controlled
    • Protects downstream system
    • Prioritizes pressure zones
    • Controls system fill-up
  • 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
  • User-Friendly Design
    • Easy pressure setting
    • Simple in-line inspection and service
    • Easy addition of control features

Typical Applications

  • Line Fill-Up Control Solutions
  • Line Emptying Prevention
  • Pressure Reducing Systems
  • Infield Filter Backwash Pressure Sustaining




[1] BERMAD Model IR-423-KXZ sustains supply system pressure thereby preventing emptying,

     controls laterals and distribution line fill-up, and reduces their operating pressure.
[2] BERMAD Relief Valve Model IR 43Q-R
[3] BERMAD Air Valve Model ARA-A-P-P
[4] BERMAD Vacuum Breaker Model ½"-ARV