RFK4X3-400ST

4" x 3" Setter Adapters for 400ST Series

The RFK4X3-400ST Zurn Wilkins setter adaptors are ideal for retrofitting existing competitor 3" n-Pattern backflow installations with a Zurn Wilkins 4" 400ST series stainless steel n-Pattern backflow preventer.

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  • Designed to adapt ZURN Wilkins 4" 400ST series stainless steel n-pattern backflow preventers to existing 3" risers with 12.5" center-to-center spacing.
  • Retrofit kit includes two offset adapters with 4" x 3" flanged connections.
  • Adaptors used in conjunction with ZURN Wilkins 4" 400ST series for a direct drop-in-replacement for retrofitting existing competitor 3” n-Pattern backflow installations.
  • Lead-free ductile iron body with FDA Approved fusion epoxy coating.
  • Used in conjunction with 400ST n-Pattern Backflow Assemblies (450ST, 450STDA, 475ST, 475STDA)
  • Available in sizes 4" - 10" in options Flange x Flange, MJ x Flange, MJ x MJ
  • Allows backflow preventer to fit tighter center line dimensions
  • Simplifies installations
  • Eliminates the need to pour concrete thrust blocks
  • Provides for a lower installation cost
  • Provides for a lower installation cost
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