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Product image of Febco 905-043 relief valve rubber repair kit showing rubber diaphragm, seat disc, and O-rings for 825Y reduced-pressure assemblies (3/4–1 1/4").

Febco 905-043 Relief Valve Rubber Repair Kit for 825Y (3/4-1 1/4")

Brand: Febco
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$102.60
$76.95
SKU 905-043

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The Febco 905-043 Relief Valve Rubber Repair Kit provides the genuine rubber components used in the relief valve of Febco 825Y reduced-pressure zone assemblies (3/4"–1 1/4"). Designed for field service, this kit restores proper sealing and relief operation for systems that protect potable water from contaminated or hazardous backflow.

  • Genuine Febco parts: RV diaphragm, RV seat disc, two stem O-rings, and lubricant included for a complete relief-valve rubber service.
  • Model compatibility: Fits Febco 825Y series covering 3/4", 1" and 1-1/4" models (825Y reduced-pressure assemblies).
  • Service impact: Restores relief valve sealing and pressure relief performance to factory tolerances when worn rubber parts cause leakage or improper operation.
  • Easy maintenance: No special tools required for most procedures; follow Febco installation and maintenance manuals for safe servicing.
  • Typical applications: Irrigation, boiler feed, industrial, institutional and municipal water systems requiring RPZ backflow protection.

Use this kit as part of regular preventative maintenance or when diagnosing relief-valve leaks or erratic relief operation. Keep original manufacturer documents and the model's maintenance manual on hand during service, and consult a certified backflow technician if you are unsure about installation or testing procedures.

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Frequently Asked Questions

What parts are included in the 905-043 repair kit?
Includes RV diaphragm, RV seat disc, two stem O-rings, and lubricant for the relief valve assembly.
Will this kit fit my Febco 825Y model?
Yes. The 905-043 kit is compatible with Febco 825Y assemblies sized 3/4", 1", and 1-1/4".
How should I service the relief valve rubber parts?
Follow the Febco maintenance manual and safety procedures. Replace worn rubber parts during routine maintenance or when leaks are present.