Pressure Reducing and Sustaining Valve IR-423-XZ

The BERMAD Model IR-423-XZ Pressure Reducing and
Sustaining Valve is a hydraulically operated, diaphragm
actuated control valve with two independent functions.
It sustains minimum preset upstream pressure regardless
of fluctuating flow or varying downstream pressure, and it
prevents downstream pressure from rising above maximum
preset regardless of fluctuating flow or excessive
upstream pressure.

Line Pressure Driven PRV and PSV

  • Prioritizes higher pressure zones
  • Protects lower pressure zones
  • Controls system fill-up
  • Prevents pipeline emptying
  • Protects pump from overload and cavitation
  • Compensates during groundwater draw down

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-line inspection and service

Downhill Supply Lines

  • Emptying Prevention
  • Higher Pressure Zone Prioritizing
  • Lower Pressure Zone Protection

Line Fill-Up Control

Systems Subject to Varying Supply Pressure

Energy Saving Irrigation Systems

Pump Overload and Cavitation Protection

Deep Well Pump Draw down Compensation

English IR 423-XZ Product Page
English IR 400 Engineering