Watts 009 1/4-1/2 Total Relief Kit

Total Relief Kit for Series 009

The Watts 009 Total Relief Kit is a service package designed for Watts Series 009 backflow preventers in the 1/4 to 1/2 inch size range. It supplies the internal components required to restore proper relief valve function during scheduled maintenance or repair. Plumbers and facility managers use this kit to maintain compliance on potable water systems. The kit includes a cover O-ring, RV spring, seat, seat O-ring, stem and diaphragm assembly, and stem O-ring.

Simple parts swap with clean seating

Installation involves disassembling the relief valve body, removing the worn internals, and fitting the new seat, spring, and diaphragm assembly from the kit. The included O-rings ensure a reliable seal when the cover is reassembled. A common issue occurs if the seat is not fully seated or if debris remains in the body bore, which can cause continued leaking or chatter. Lubricating the O-rings with approved plumber's grease helps prevent damage during assembly.

Verify model and size before ordering

Confirm that the installed device is a Watts Series 009 unit and that its nominal size falls within the 1/4 to 1/2 inch range marked on the body. This kit will not fit other series or larger valve sizes. Check local code requirements for testing frequency after repair. Note the California Proposition 65 warning regarding chemicals known to cause reproductive harm.