Description

Bermad 350-A-4 x 4-P Plastic Double Chamber Filter Back Wash Valve

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

Applications:

Automatic Backwash of Filter Batteries

Gravel Filters
Sand Filters
Disk Filters
Screen Filters

Single Filter Autonomic Backwash System

Angled or Straight Installations

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 servic

Operation

Angel Flow

A Hydraulic Command, which pressurizes the Upper Control Chamber, forces the Diaphragm actuated Plug Assembly to move towards the Supply Port Seat, eventually sealing it drip tight.
This allows flow from the filter through the Drain Port Seat. Venting the upper control chamber causes the line pressure, together with the Spring force, to move the Valve back to filtration mode.

Straight Flow

A Hydraulic Command, which pressurizes the Lower Control Chamber, forces the Diaphragm actuated. Plug Assembly to move towards the Supply Port Seat, eventually sealing it drip tight.
This allows flow from the filter through the Drain Port Seat. Venting the upper control chamber causes the line pressure, together with the Spring force, to move the Valve back to filtration mode