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high capacity Duovent air vent assembly
two seat O-rings
The galvanized option is a twice hot dipped galvanized steel that provides 6-10 years of an estimated lifespan
Water flow is directed toward the outlet in the channel drain
Z187-4NH-6×7×12
Watts LFRK 909-RT 6 - Part of the RK-LF909 Series geogrid high capacity Duovent air ventThis kit contains the rubber parts for the repair of the 6 inch Watts backflow preventer relief valve, lead free series 909 RT. It has a diaphragm, two molded disc assemblies, two seat O rings, RV O ring, two piston O rings, RV stem O ring, flow tube O ring and cover O ring. Features Factory replacement kit No special tools required for changing parts All parts are made of high quality materials Original parts insure long service life Specifications