This 1/2″ 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 backflow preventer, model 9D and a bronze feed water pressure regulator, model 1156F, 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 and has 1/2″ union solder inlet x NPT threaded outlet connections. The maximum pressure is 100 PSI (6.9 BAR).
Watts 0386462 Features:
Pre-assembled unit
Solder connection
All bronze, union solder x female NPT
High capacity fill
Union solder inlet X threaded outlet connections
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Specifications
| Material | Bronze |
| Approved for Commercial Use | Yes |
| Lead Leaching Certified NSF/ANSI 61 | N/A (Regulation does not apply) |
| Water Connection | 1/2" |
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