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This 2 IN double check seat valve repair kit for series 719 is designed to protect drinking water supplies from dangerous cross-connections in accordance with national plumbing codes and water authority requirements
UPC - 098268500424
This kit consists of first check module
dental equipment
primary and secondary weepholes for dual drainage
Watts B911M3-QC - Part of the 911 Series snake fence This 2 IN double checkThis 1 2 inch 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