Watts 0887211 Repair Kit

The Watts 0887211 Repair Kit (model RK 909-CK2 2 1/2-3) is a professional-grade solution for servicing the second check valve on 2-1/2 inch and 3 inch Watts Series 909 reduced pressure zone (RPZ) backflow preventers. As a veteran-preferred Watts 909 second check repair kit, this package includes a full check valve disc and spring assembly, a premium cover O-ring, and plumbing-grade lubricant. Designed for seamless replacement of the RK909CK2-2 1/2-3, this kit ensures the check module maintains a tight seal and reliable 2-psi differential pressure required by code. Field technicians can perform the backflow preventer second check maintenance efficiently, as the 909 series allows for a quarter-turn seat removal on these specific sizes without specialized heavy-duty tools. Utilizing genuine Watts 0887211 components is critical for restoring the assembly to original performance specifications and passing annual field testing. Whether you are managing Watts 909 repair parts for a commercial fire line or a standard domestic potable water system, this check valve replacement kit provides the necessary modular parts to eliminate "spitting" or bypass issues caused by fouled or exhausted internal springs.

Key Benefits:

• Ensures accurate backflow prevention service by replacing the entire second check internal module.
• Compatible with both Series 909 and 909RPDA reduced pressure detector assemblies in 2-1/2" and 3" sizes.
• Includes a factory-tensioned check spring assembly to prevent downstream pressure fluctuations.
• Features a high-durability EPDM disc for long-term sealing integrity in potable water applications.
• Streamlines the RPZ valve repair process with a drop-in check valve module.

Common Questions:

How do I know if I need a relief valve kit or a second check kit?
If the device is dripping continuously from the relief valve vent, the first check is usually fouled. However, if the device fails the backpressure test on the second check, you must use the Watts 0887211 to restore a reliable seal against reverse flow.

Does this kit work for the Lead Free (LF909) version?
Yes, the internal check components for the RK 909-CK2 are compatible with both the standard bronze 909 and the Lead Free LF909 series for these specific pipe diameters.

Can I replace just the rubber parts?
While rubber-only kits exist (RK 909 RC2), veteran contractors prefer the 0887211 complete check kit because it includes the spring and disc holder, preventing potential callbacks caused by weakened spring tension or damaged guide fins.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.