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Close-up of Wilkins RK1-375BOF 1-inch blow-out/flush housing with inlet and outlet O-rings visible in repair kit.

Wilkins RK1-375BOF 1-inch Blow-Out & Flush Kit for 375

Brand: Zurn Industries, LLC
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$57.77
$43.33
SKU RK1-375BOF

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Genuine Wilkins RK1-375BOF 1-inch blow-out and flush kit designed for 1" Wilkins 375 and 375XL reduced-pressure backflow assemblies. This repair accessory helps clear debris, flush new lines, and simplify winterization so checks remain free of obstruction.

  • Fits 1" Wilkins/Zurn models 375 and 375XL — compatible with standard 1" double-check and reduced-pressure assemblies.
  • Includes blow-out/flush housing and two replacement O-rings for inlet and outlet (housing part 373-1BOF where applicable).
  • Enables blow-out and flushing of lines to remove debris and prepare systems for winterization or commissioning.
  • Genuine Zurn/Wilkins repair part made to OEM tolerances for secure fit and reliable performance.
  • Simple service step: remove cartridge housing, insert blow-out fitting, attach fittings or hose, then blow out or flush.

Recommended for use by qualified installers or maintenance technicians. Always follow local codes and Zurn/Wilkins instructions when servicing backflow devices.

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Frequently Asked Questions

What Wilkins models is the RK1-375BOF compatible with?
Fits Wilkins and Zurn 1" models 375 and 375XL; meant for 1" reduced-pressure assemblies.
How do I install and use the blow-out/flush fitting?
Remove the cartridge housing, insert the blow-out housing, attach hose or fittings, then blow out or flush lines.
What parts are included in the RK1-375BOF kit?
Includes the 1" blow-out/flush housing plus inlet and outlet O-rings; OEM Zurn/Wilkins replacement parts.

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