New Arrivals/Restock

Watts® 1/2-B911S-M3 Combination Fill Valve and Backflow Preventer, 1/2", Bronze

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$102.84 cheaper than the new price!!

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New  $186.98
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Product details

Management number 204749116 Release Date 2025/10/21 List Price $84.14 Model Number 204749116
Category

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 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 heating systems. Maximum Pressure: 100psi (6.9 bar).

  • 1/2"
  • Bronze
  • Includes #9D backflow preventer & #1156F feed water pressure regulator in 1 pre-assembled unit
  • Use in commercial & residential hydronic heating systems to provide make up water to the boiler & prevent backflow when supply pressure falls below system pressure
  • Bronze body construction union solder x npt connections
  • A high capacity fill valve that provides quick system filling & purging
  • Maximum pressure: 100 PSI, 6.9 bar
  • Meet lead free standards.

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