Watts® 1/2-B911S-M3 Combination Fill Valve and Backflow Preventer, 1/2", Bronze 4thJuly This simplifies selection of the

This simplifies selection of the right connector for a wide range of wiring jobs

Size: 5/8"x100'

Material: Rubber

Clam Shell Pack

Watts® 1/2-B911S-M3 Combination Fill Valve and Backflow Preventer, 1/2", Bronze 4thJuly This simplifies selection of theUse in commercial and residential hydronic heating systems to provide make up water to the boiler, and prevent backflow when supply pressure falls below system pressure. It consists of a bronze Watts Model 9D backflow preventer and a bronze Watts Model 1156F feed water pressure regulator in one pre assembled unit. High capacity fill valve that provides quick system filling and purging. It is designed for use in the boiler feed lines of hydronic