WATTS 800M4FR 1" RETROFIT KIT

1 Backflow Retrofit Kit, Float, Spring, Bonnet, Bonnet O-Ring, 800M4-Fr. This is an original manufacturer repair product used within various divisions of the Watts Water Technology Company (Ames, Febco, Watts)

Model Overview

This is a pressure vacuum breaker. Production began in 1994. This is a bronze bodied unit. In 2010 a LF800M4 model was introduced which was constructed of lead free bronze. The check spring is contained when the bonnet is removed. The check seat is replaceable. A seat removal tool is needed to change the seat. The test cocks for this model are located on the ball valves and not on the assembly body. The 800M4 is a redesign of the 800M2 and 800M3 series with the only difference being the incorporation of a replaceable check seat. In 1995 the 800 M4 FR model was introduced. This model contains a small relief valve built into the air inlet float to prevent damage if the assembly froze.