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 Model IR-3x3-350-I is a compact 3-port valve, in a T configuration. It is double chambered, hydraulically operated, and diaphragm actuated. Designed for automatic backwashing of filtration systems, the BERMAD Model IR-3x3-350-I is available in Angle flow (A) and Straight flow (S) configurations.

Features and Benefits

Line Pressure Driven

Double Chambered Design

  • Wide application range
  • Requires low actuation pressure
  • Protected diaphragm

Dynamic Sealing

  • Seals at very low pressure
  • Prevents seal friction and erosion

Cast Iron Body

  • Rigid construction, high stress resistance

Short Valve Travel

  • Smooth changes of flow direction
  • Eliminates mixing of supply and waste water

User- Friendly

  • Can be installed in various orientations
  • Simple in-line inspection and service

Typical Applications

  • Automatic Backwash of Filter Batteries
  • Gravel Filters
  • Sand Filters
  • Disk Filters
  • Screen Filters
  • Single Filter Autonomic Backwash System
  • Angled or Straight Installations


[1] BERMAD Model IR-3x3-350-S-I allows flow into the filter, and switches closed upon pressure rise command, thereby blocking inlet to filter and enabling backwash flow from the filter.
[2] BERMAD Hydrometer Model IR-900-M0
[3] BERMAD Air Valve Model ARC-A-I-P



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