Fits 2-1/2 inch LF009, 3 inch LF009, 2-1/2 inch 009, and 3 inch 009

This total rubber parts kit is used for replacing or repairing the relief valve assembly on a lead free reduced pressure backflow assembly used to prevent the reverse flow of polluted water from entering into the potable water supply due tobacksiphonage and or backpressure. This kit consists of 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.