Bermad 350-3 x 3-P Back Wash Valve

• 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
• Engineered Plastic Valve Design
  • Highly durable, chemical and cavitation resistant
• 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

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