Watts 0887371 Seat Kit

Maintain the containment integrity of your Watts 1-1/4" to 2" 909 series reduced pressure zone (RPZ) assemblies with the Watts 0887371 (RK 909M1 SV) relief valve seat kit. This technical-grade service kit is engineered specifically for the RK909SV1.25-2 relief valve module, serving as the direct OEM replacement for the legacy RK909SV-1 1/4-2 part numbers. When you're dealing with a dumping relief valve or persistent nuisance dripping, a compromised seat or fouled O-rings are the primary suspects.

The Watts 0887371 kit provides the critical components needed to restore the differential pressure relief valve to factory-spec tight-sealing performance. This professional-tier backflow preventer repair kit includes a high-impact replacement seat, a precision-fit seat O-ring, two piston O-rings, and specialized food-grade lubricant for seamless O-ring seating. Designed for field maintenance without the need for specialized extraction tools, this kit facilitates a standard teardown and rebuild of the 909 and LF909 relief valve assemblies, ensuring your backflow prevention system remains compliant with local plumbing codes and high-pressure system demands.

• Precise OEM Compatibility: Specifically sized for 1-1/4", 1-1/2", and 2" Watts 909 and LF909 Series backflow preventers.
• Field-Service Optimized: No specialized tools are required for installation, reducing downtime during critical maintenance cycles.
• Complete Sealing Solution: Includes all necessary relief valve rubber parts (piston and seat O-rings) to eliminate internal bypass leaks.
• Industrial Durability: Machined parts are built to withstand the high-velocity discharge and cycle rates of industrial RPZ modules.

• How do I know if I need the Watts 0887371 seat kit? If the relief valve is constantly discharging water even when the differential pressure is steady, the internal seat or the piston O-rings are likely pitted or fouled. This kit replaces the physical seating surface to ensure a positive shut-off.
• Does this kit work on both bronze 909 and lead-free LF909 models? Yes, the 1-1/4" to 2" relief valve internal components are cross-compatible between the standard 909M1 and the Lead-Free (LF) iterations.
• Are individual tools required to remove the seat? The seat in the relief valve module for this size range can typically be accessed using standard hand tools once the relief valve cover is removed and the module is extracted.

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.