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FEBCO 905-351 check module kit - close-up of metal housing and replacement components for 1 1/4 in and 2 in assemblies.

FEBCO 905-351 Check Module for Series 850, 860 & 880 (1 1/4 in - 2 in)

Brand: Febco
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$107.40
$80.55
SKU 905-351

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Replacement check module 905-351 by Febco for servicing Series 850, 860 and 880 backflow preventer assemblies. This genuine Febco check assembly kit restores the second-check function and includes all wear components needed for a standard service—ideal for irrigation, fireline, and industrial applications.

  • Compatibility: Fits FEBCO Series 850 (both #1 & #2) and Series 860/880 second check assemblies in 1 1/4 in and 2 in sizes.
  • Kit contents: Seat, O-ring(s), poppet, seal disc, disc retainer, round HD screw, spring, guide and lubricant—everything required for check module replacement.
  • Service benefits: Restores sealing and check performance to reduce leakage and maintain system protection without full assembly replacement.
  • Installation: Designed for simple field service by trained technicians; no special tools required. Follow Febco installation and maintenance instructions included in product documents.
  • Genuine OEM part: Febco-manufactured replacement part for reliable fit and function with Febco backflow assemblies.

This check module is supplied as a repair kit for preventative maintenance and repair. Always follow local codes and the assembly's installation manual when servicing backflow preventers. For technical assistance or parts diagrams, consult the included Febco documents and service literature.

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Frequently Asked Questions

What does the 905-351 check module include?
Includes seat, O-ring(s), poppet, seal disc, disc retainer, screw, spring, guide and lubricant for module replacement.
What assemblies and sizes is this part compatible with?
Fits Febco Series 850 and Series 860/880 second-check assemblies in 1 1/4 in and 2 in sizes.
Can I install this check module myself?
A trained technician can perform the field service with common tools; follow Febco installation and maintenance instructions.