3/4-1 Backflow Seat Repair Kit, Series 709_This 3/4 to 1 inch seat kit is for series 709, which is used to prevent the reverse flow of polluted water from entering into the potable water supply. This kit consist of a seat and seat O-ring._All parts are made of high quality materials_No special tools required for changing parts_Factory Replacement Kit_Seat kit_Specifications_ADA Compliant N_Brand Watts_Buy American Act Compliant NO_Kit Contents Seat, Seat O-Ring And Cover O-Ring_Kit Type Seat Kit_Lead Free YES_Part Number 0887160_Product Group BACKFLOW KITS_Products Used On Series 709 Double Check Valve Assembly, Backflow Preventing Valve_Series RK-709