This 007M1 total repair kit for 3/4 and 1 IN sized valves provides all the parts necessary to replace the major internal components of the applicable double check valve assembly. This kit consists of a cover O-ring and two seats, seat O-rings, disc assemblies, springs, and check cages for both first and second checks. All parts are genuine and original to the valve. WATTS® Total Valve Repair Kit, For Use With: 3/4 to 1 in Double Check Valve Assembly