Watts 0794066 Repair Kit

The Watts 0794066 Repair Kit (LFRK909-T-RT) is a comprehensive field service solution designed specifically for maintenance on 3/4 inch and 1 inch Lead Free Reduced Pressure Zone (RPZ) backflow preventers. This total relief valve repair kit ensures the integrity of the Series LF909 and 909 backflow assemblies by providing all necessary components to address relief valve discharge or pressure fluctuations. The kit includes the relief valve seat, seat O-ring, relief valve stem assembly, stem O-ring, and cover O-ring. Engineered for longevity and chemical resistance, these components assist in maintaining the required pressure differential between the supply and the zone. Utilizing genuine Watts replacement parts ensures precise fitment and restores the assembly to original factory specifications, critical for passing annual backflow certification tests. For technicians, this kit simplifies the backflow preventer troubleshooting process, providing a path to resolve mechanical failures without replacing the entire bronze valve body.

Key Benefits for Field Technicians

• Direct Compatibility: Specifically engineered for 3/4" - 1" LF909 and 909 series reduced pressure zone assemblies.
• High-Grade Elastomers: Features durable O-rings and seals designed to withstand variable water temperatures and water hammer.
• Restores Differential Pressure: Replaces worn internal components to eliminate "nuisance spitting" and maintain the 2.0 psi minimum differential.
• Lead-Free Construction: Complies with low-lead regulations for potable water applications.
• Preventative Maintenance: Provides a cost-effective alternative to full valve replacement during routine system shutdowns.

Common Technical Questions

What causes a constant drip from the relief valve on the 909 series?

Constant discharge usually indicates debris on the relief valve seat or a damaged diaphragm. Installing the total repair kit replaces these wear points to ensure a watertight seal when the downstream pressure rises.

Is this kit compatible with the older 909 non-lead-free models?

Yes, the internal relief valve components in the LFRK909-T kit are designed to fit both the standard 909 and the lead-free LF909 series in the 3/4" and 1" sizes.

What tools are required for this repair?

A standard wrench set and a small amount of FDA-approved silicone lubricant for the O-rings are typically required. Ensure the system is depressurized before removing the relief valve cover.

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.