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Febco 905-343 1-inch check rubber kit showing replacement check discs and cover O-rings for Series 850/860 double-check valves.

Febco 905-343 1" Check Rubber Kit for Series 850/860

Brand: Febco
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$38.67
$29.00
SKU 905-343

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OEM Febco replacement kit for 1" check modules used in Series 850 and 860 double-check valve assemblies. Designed to restore reliable sealing and extend service life during routine maintenance of irrigation, commercial, and municipal backflow systems. Use this kit when check discs and cover O-rings show wear, cracking, or deformation.

  • Includes: replacement check discs and cover O-rings for the 1" check modules; kit contents support servicing of both first and second checks and help re-establish proper sealing. Lubricant packet may be included with some kits.
  • Compatibility: fits Febco Series 850 and 860 double-check assemblies in the 1" size (Febco part number 905-343).
  • Intended use: for repair and routine maintenance on non-health-hazard applications; restores valve sealing performance without full module replacement when rubber parts are the source of leakage.
  • Standards & connections: compatible with valves using NPT end connections per ANSI/ASME B1.20.1; follow OEM torque and assembly guidance during reinstallation.
  • Service tip: inspect valve seats, guides, and springs when replacing rubber components; replace additional modules or springs if mechanical wear is found.

Documentation: installation instructions, specification sheet, and maintenance manuals are available from Febco and should be consulted before performing service. Order genuine Febco part 905-343 to ensure correct fit and reliable operation.

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Frequently Asked Questions

What does this Febco 905-343 kit include?
Includes replacement check discs and cover O-rings for the 1" check modules; kit contents support servicing of first and second checks.
Will this kit fix a leaking double-check valve?
If leaks are caused by worn rubber seals, replacing the check discs and O-rings typically restores sealing. Verify valve model and size before ordering.
Is this an OEM Febco part and which models does it fit?
Yes. This is Febco part 905-343 for 1" assemblies and fits Series 850 and 860 double-check valves.