Watts 7018129 RK-957 Series Lead Free 2-1/2 in. - 4 in. First Check Repair Kit For 957, LF957RPDA and 957RPDA Reduced Pressure Detector Assembly Backflow Preventers
Watts 7018132 RK-957 Series Lead Free 6 in. First Check Repair Kit for 957, LF957RPDA and 957RPDA Reduced Pressure Detector Assembly Backflow Preventers
Watts 0899217 RK-957/957RPDA Series Lead Free 6 in. Second Check Kit For Series 957, LF957RPDA and 957RPDA Reduced Pressure Detector Assembly Backflow Preventers