Watts RK 009 RT Backflow Preventer Repair Kit 1/4-1/2

Watts RK 009 RT Backflow Preventer Repair Kit

This repair kit contains the internal components needed to service Watts backflow preventers. It includes two disc assemblies, two RV seat O-rings, two seat O-rings, a cover O-ring, a diaphragm and stem O-rings. The kit is designed for plumbing maintenance professionals and facility managers who maintain potable water protection systems. Transparent coloured parts allow visual inspection of component condition during assembly.

Replaces worn internal seals and moving parts

Over time, the diaphragm, disc assemblies and O-rings degrade due to water chemistry and pressure cycles, causing the preventer to fail its test. Installing this kit restores the original sealing surfaces without replacing the entire valve body. The jump is worth it when annual testing reveals leakage or reduced pressure differential across the device. California Proposition 65 warnings apply because the kit contains chemicals known to the state to cause cancer and birth defects or other reproductive harm.

Fits 1/4 to 1/2 inch models including SS009M3QT

The components match the specific dimensions of these listed Watts models, so no adaptation is required during reassembly. Using the correct kit frees up labour time compared to fabricating generic seals and avoids the cost of a full valve replacement. Installers should verify the model number on the valve body before disassembly to confirm compatibility.