Bermad 350 Series Metal FIlter Backwash Valves

The Bermad 350 Series Double Chamber Back Wash Valve replaces the older, single chamber valve. The valve is used in media and disc filter applications for automating bach wash of the filter systems. The valve can be supplied in angle or in line pattern.

APPLICATIONS

• Automatic Backwash of Filter Batteries
• Gravel Filters
• Sand Filters
• Disk Filters
• Screen Filters
• Single Filter Autonomic Backwash System

FEATURES

• Ideal for automatic backwashing of filtration systems
• The simple design of these compact, 3-port valves guarantees smooth operation and extended,
• trouble-free service
• Their diaphragm actuated plug assembly keeps the water supply port closed when opening the
• backwash port allowing dirty water from the filter to flow through the valve's open filter and drain
• ports to waste
• The dynamic seal ensures drip-tight closure of supply and drain ports
• The valve short travel provides smooth flow direction change and water conservation
• 3" - 2" Cast Iron Body

TECHNICAL DATA

• Control Chamber Displacment Volume: 0.34 liter; 0.09 gallon
• Operating Pressure: 0.7-10 bar; 10-145 psi
• External Operating Pressure: 85%-100% of operating pressure
• Maximum Temperature: 65°C;150°F
• End Connections: Inlet (port 1) & Outlet (C): Grooved 3”. Drain (2): Threaded 2” =
• Flow Patterns: Angled Flow

MATERIALS

• Valve Body: Cast Iron
• Separating Partition & Cover: Polyamide 6 – 30GF Black
• Diaphragm: NR-AL52 Nylon Fabric Reinforced
• Seats, Diaphragm Washers: Brass
• Plug, Plug Washer: Acetal Copolymer Black
• Stopper Disk: PVC-U
• Seal, O-Rings: NBR
• Spring: Stainless Steel AISI 302
• Shaft: Stainless Steel AISI 303
• External Bolts, Studs, Nuts & Disks: Stainless Steel