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

Pressure Reducing Hydrometer

The BERMAD Model IR-920-M0-50-R integrates a vertical turbine Woltman-type water meter, with a diaphragm actuated hydraulic control valve. As the system's Flow Meter and Main Valve, it controls system irrigation together with the irrigation controller. The BERMAD Model IR-920-M0-50-R reduces downstream pressure to a constant preset maximum. It either opens or shuts in response to pressure commands.

Features and Benefits

Integrated "All-in-One" Control Valve

  • Saves space, cost and maintenance

Hydraulic Pressure Control

  • Line pressure driven
  • Protects downstream systems
  • Hydraulically controlled On/Off

Magnetic Drive with Vacuum-Sealed Register

  • Water-free gear train mechanism
  • Reed-switch and Opto pulse-generating modes
  • Varios pulse combinations

Internal Inlet & Outlet Flow Straighteners

  • Saves on straightening distances
  • Maintains accuracy

Integrated Flow Metering Calibration Device

  • Precise measurement

User-Friendly Design

  • Easy pressure setting
  • Simple in-line inspection and service

Typical Applications

  • Computerized Irrigation Systems
  • Pressure Reducing Systems
  • Remote Flow Data Read-Out
  • Flow Monitoring & Leakage Control
  • Distribution Centers
  • Irrigation Machines
  • Volumetric Irrigation Systems



[1] BERMAD Model IR-920-M0-50-R opens upon command pressure drop, establishing reduced pressure zones & measuring the flow.
[2] BERMAD Hydraulic Main Valve Model IR 405-54-R
[3] BERMAD Air Valve Model ARC-A-I-I



  Office 520-384-9223
401 E Maley
Willcox, AZ 85643
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