BD911S Watts 1/2" Union Sweat Brass Combination Dial Set Fill Valve & IPS Backflow Preventer 100 PSI

WATBD911S12 MFG #: 0386468
  • End Connection: Soldered x Female Threaded
  • Manufacturer Name: Watts
  • Valve Size: 1/2"
  • Specifications
  • Documents
  • Description
  • All bronze, union solder x NPT end connections
  • Pre-assembled unit
  • High capacity
  • Horizontal or vertical installation
This 1/2 inch bronze combination dial set 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 model BD1156F feed water pressure regulator in one pre-assembled unit. The high capacity fill valve provides quick system filling and purging. It is designed for use in the boiler feed lines of hydronic heating systems. It has 1/2 inch union solder inlet x NPT threaded outlet connections. The maximum pressure is 100 psi (6.9 bar).