Zurn Wilkins

Model 350AST 4 in. Stainless Steel Flanged 175 psi Backflow Preventer

Part #W350ASTRNRSAP  |  Manufacturer Part #4-350ASTRNRS-A

Valve Size:

4 in
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Product Details

  • For drop-in replacements installed between the backflow valve and the outlet shut-off valve
  • With flanged end NRS gate valves
  • Lower maintenance costs from corrosion resistance
  • Zurn Wilkins® compound check provides low headloss
  • Single access cover reduces maintenance down time
  • Designed to replace old, long lay length double check valve assemblies
  • Stainless steel body and spool
  • Reduces the cost of assembly replacement


Collection: Model 350AST

End Connection 1: Flanged

End Connection 2: Flanged

End Connections: Flanged

Material: Stainless Steel

Maximum Pressure: 175 psi

Valve Size: 4 in