Watts® 1/2-B911S-M3 Combination Fill Valve and Backflow Preventer, 1/2", Bronze FREE SHIPPING Close shape tread provides great

Close shape tread provides great traction & wide shoulder design

also known as metalbest or metabasites

thermal-bonded black graduations in 1/8"

WypAll® L40 All-Purpose Wipers is used for a wide range of industrial cleaning and maintenance tasks

Watts® 1/2-B911S-M3 Combination Fill Valve and Backflow Preventer, 1/2", Bronze FREE SHIPPING Close shape tread provides greatUse 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