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Filter Backwash Hydraulic Valve IR-4X4-350-P

The BERMAD Model IR-4x4-350-P 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-4x4-350-P is available in Angle flow (A) and Straight flow (S) configurations.

Product Features & Benefits
  • Line Pressure Driven.
  • Double Chambered Design

-Quick and smooth mode change

-Wide application range

-Requires low actuation pressure

-Protected diaphragm

  • Dynamic Sealing

-Seals at very low pressure

-Prevents seal friction and erosion

  • Engineered Plastic Valve Design

-Highly durable, chemical and cavitation resistant

  • Long Valve Travel

-Higher flow and lower head loss

-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 Product Applications

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-4×4-350-S-P allows
flow into the filter, switches close upon pressure rise command
blocking inlet to filter and enables backwash flow from the filter.

[2] BERMAD Strainer Model IR-70F.

[3] BERMAD Combination Air Valve Model C10.

[4] BERMAD Pressure Reducing Valve Model IR-420.

[5] BERMAD Quick Pressure Relief Valve Model IR-43Q.

[6] BERMAD Pressure Sustaining Hydrometer Model IR-930-M0-X.