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

Flow Control and Pressure Reducing Hydrometer

The BERMAD Model IR-972-M0-50-RV 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 irrigation together with the irrigation controller. The BERMAD Hydrometer limits the flow and downstream pressure to a constant preset maximum. It either opens or shuts in response to remote pressure commands.

Features and Benefits

Integrated "All-in-One" Control Valve

  • Saves space, cost and maintenance

Hydraulic Flow, Pressure and On/Off Control

  • Limits fill-up rate and consumer over-demand
  • Protects downstream systems

Magnetic Drive with Vacuum-Sealed Register

  • Water-free gear train mechanism
  • Reed-switch and Opto pulse-generating modes
  • Various pulse options

Internal Inlet & Outlet Flow Straighteners

  • Saves on straightening distances
  • Maintains accuracy

Integrated Flow Metering Calibration Device

Paddle-Type Hydro-Mechanic Flow Pilot

  • No added head loss
  • Wide setting range

Simple In-Line Inspection and Service

Typical Applications

  • Computerized Irrigation Systems
  • Remote and/or Elevated Plots
  • Flow Monitoring and Leakage Control
  • Multiple Independent Consumer Systems
  • Line Fill-Up Control
  • Pressure Reducing Stations
  • Irrigation Machines



[1] BERMAD Model IR-972-M0-50-RV opens upon pressure drop command, limits fill-up rate and consumers over-demand, and establishes reduced pressure zone.
[2] BERMAD Pressure Reducing & Flow Control Hydrometer Model IR-972-M0-50-RV (3"R; DN80R and smaller)
[3] BERMAD N.C. Main Valve Model IR-405-R
[4] BERMAD Strainer Model 70F
[5] BERMAD Air Valve Model ARC-A-I-I



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