Watts 0794089 Rubber Parts Kit

The Watts 0794089 Rubber Parts Kit is a comprehensive field-service solution designed specifically for the maintenance and repair of 2-1/2 inch and 3 inch Watts 909 Reduced Pressure Zone (RPZ) backflow preventer assemblies. Engineered to restore the internal sealing integrity of Lead Free high-capacity assemblies, this kit is the direct OEM replacement for legacy part numbers 0887750, LFRK909-RT-2 1/2-3, and RK909RT-2 1/2-3. As a critical component for cross-connection control, this RK 909-RT kit includes all necessary elastomers including check discs, O-rings, and diaphragm components required to address relief valve weeping or seating failure. Utilizing high-durometer EPDM components, the Watts 0794089 ensures precise backflow preventer repair performance under varying hydraulic pressures, maintaining the safety of potable water systems while meeting strict NSF/ANSI 61 compliance standards during routine inspections or emergency service calls.

Key Benefits for Technicians:

• Direct Compatibility: Exact fit for 2.5" and 3" Watts 909 series backflow preventers, ensuring zero-clearance sealing.
• Industrial Grade Elastomers: High-performance rubber components designed to resist mineral buildup and thermal degradation.
• Lead Free Certified: Fully compliant with Safe Drinking Water Act requirements for Lead Free installations.
• Versatile Application: Functions as the updated service kit for discontinued 0887750 and RK909RT sequences.
• Complete Internal Overhaul: Provides all soft goods needed to resolve friction issues within the check modules and relief valve.

Common Technical Questions:

Is the 0794089 kit compatible with both standard 909 and LF909 models?
Yes, this rubber parts kit is engineered to service both the standard and Lead Free 909 series assemblies in the 2.5-inch and 3-inch size range.

Does this kit include the check spring or the seats?
No, the 0794089 is a rubber parts kit (RK) focusing on elastomers. For structural metal components like springs or seats, a total relief valve or total check kit would be required.

How do I resolve a relief valve discharge issue after installing the 0794089?
Verify that the sensing line and diaphragm are seated correctly and ensure there is no debris on the check discs. This kit restores the sealing surfaces, but the assembly must be tested with a differential pressure gauge post-installation.

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.