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Watts Fill Valve and Backflow Preventer

Provide make-up water to the boiler, and prevent backflow


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. Part consists of a bronze Watts Model 9D backflow preventer and a high-capacity bronze Watts Model 1156F feed water pressure regulator in one pre-assembled unit.

Documentation: Watts-911.pdf


Part No. Qty Unit Price
0386460 B9-11T (1/2 inch thread) $127.14
0386462 B9-11S (1/2 inch sweat) $127.14

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