Home / Backflow Assemblies / Ames Backflow Assemblies / 6 IN / RPDAFilter your Results Assembly TypeAll C500 RPDAFind PartsClear FiltersSKU: A C500OSY6AMES COLT 500 6" RPDA BACKFLOW ASSEMBLY WITH OS&Y GATE VALVES BYPASS ASSEMBLY AND CF METER *CONTAINS LEAD*$10,561.26Add to CartSign In for Contractor Price