Zurn Wilkins

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

Part #W350ASTROSYBP  |  Item #4570118  |  Manufacturer Part #4-350ASTROSY-B

Call for Pricing EACH

Valve Size:

4 in
Packaging Info:
  • Quantity Per 
  • Each:  1
  • Inner pack:  1

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Product Details

  • 4" double check assembly with flanged OS&Y gate valves and custom sized spool
  • Designed to replace old, long lay length double check assemblies
  • 304L grade stainless steel body and spool
  • Reduces the cost of assembly replacement
  • Single access cover reduces maintenance down time


Collection: Model 350AST

End Connection 1: Flanged

End Connection 2: Flanged

End Connections: Flanged

Height: 32-3/4 in

Length: 65-7/16 in

Material: Stainless Steel

Maximum Pressure: 175 psi

Valve Size: 4 in

Weight: 334

Weight Capacity: 23.125

Width: 23-1/8 in