1 1/2-2 Backflow Complete Rubber Repair Kit, Series 709_This 1 1/2-2 IN complete rubber parts kit for series 709 helps to prevent the reverse flow of polluted water from entering into the potable water supply. This kit consist of a diaphragm, disc assembly, seat O-ring and a cover O-ring. It is ideal at referenced cross-connections identified in non-health hazard applications. Check with local inspection authorities for installation requirements._All parts are made of high quality materials_Complete rubber parts kit_Factory Replacement Kit_No special tools required for changing parts_Specifications_ADA Compliant N_Brand Watts_Kit Contents Disc Assembly, Seat O-Ring And Cover O-Ring_Kit Type Complete Rubber Parts Kit_Lead Free NO_Part Number 0887153_Product Group BACKFLOW KITS_Products Used On Series 709 Double Check Valve Assembly, Backflow Preventing Valve_Series RK-709