Watts 1/2 BD911T-M3 - Part of the BD911 Series R304 Detectable Warning Surfaces creating a robust barrier with

creating a robust barrier with an estimated lifespan of 6-10 years

4 IN No Hub Outlet

Neutral Base – Flat invert base is perfect for driveway grades requiring precision

Shallow Profile is 5-1/2 in

Watts 1/2 BD911T-M3 - Part of the BD911 Series R304 Detectable Warning Surfaces creating a robust barrier withThis 1 2 inch bronze combination fill valve and backflow preventer is for use 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 model 9D backflow preventer and a bronze feed model BD1156F water pressure regulator in one pre assembled unit. The high capacity fill valve provides quick system filling and purging. It