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

Filter Backwash Hydraulic Valve

The BERMAD Filter Backwash Flow Control Valve is a hydraulically operated, diaphragm actuated control valve that limits filter system backwash flow to a constant preset maximum. This eliminates the risk of filtration element collapse or of filter grains being flushed out.

Features and Benefits

Line pressure driven Hydraulic Flow Control

  • Prevents flushing out of grains or filtration element collapse

Servo Flow Pilot Controlled

  • Dynamic integrated needle valve
  • Very low hysteresis
  • Easy flow setting

Engineered Plastic Valve with Industrial Grade Design

  • Highly durable, chemical and cavitation resistant
  • No internal bolts and nuts

hYflow ‘Y’ Valve Body with “Look Through” Design

  • Ultra-high flow capacity – Low pressure loss

Unitized Flexible Super Travel (FST) Diaphragm and Guided Plug

  • Accurate and stable regulation with smooth closing
  • Requires low actuation pressure
  • Prevents diaphragm erosion and distortion

Hydraulic Flow Sensor (upstream installation)

  • No moving parts
  • No need for flow straightening

Typical Applications

  • Filter Stations
  • Systems Subject to Varying Supply Pressure



[1] BERMAD Model IR-170-beU Limits system backwash flow, preventing flushing out of grains.
[2] BERMAD Filter Backwash Hydraulic Valve Model IR-3x2-350-A-I



  Office 520-384-9223
401 E Maley
Willcox, AZ 85643
Mining Orders:
Agricultural Orders: