Series B911, B911S Bronze Combination Fill Valve and Backflow Preventers are 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 Watts Model 9D backflow preventer and a bronze Watts Model 1156F feed water pressure regulator in one pre-assembled unit. Model B911 has union NPT x NPT connections. Model B911S has union solder x NPT connections. The Series B911, B911S has a 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).
| Watts | |
|---|---|
| Product Category | Industrial Valves |
| Product Number | B911, B911S |
| Product Name | Bronze Combination Fill Valve and Backflow Preventers |
| Valve Type | Back Flow |
