The Complete Repair Kit is compatible with the 1" Model 70XL Pressure Reducing Valves. Repair Kit components include one Union Gasket, Cartridge, Diaphragm, Diaphragm Disc, Diaphragm Bolt, Stainless Steel Spring, Spring Disc, Friction Ring, Locknut, and Adjustment Bolt. Repair Kits are sold as accessories for quick and simple repair needs extending the life of your pressure reducing valve.