1 1/4" to 1 1/2" Backflow Preventer Valve First Check Repair Kit, Series 4000B

ARK 4000B-CK12

Second Check Kit for 1/2" Series 4000B Reduced Pressure Zone Assembly

Second Check Kit for 3/4" Series 4000B Reduced Pressure Zone Assembly

Second Check Kit for 3/4" Series 4000BM3 Reduced Pressure Zone Assembly

Second Check Kit for 1" Series 4000B Reduced Pressure Zone Assembly

1 1/4" to 1 1/2" Backflow Preventer Valve Second Check Repair Kit, Series 4000B

ARK 4000B-CK22

Check Rubber Parts Kit for 1/2" Series 4000B/LF4000B Reduced Pressure Zone Assembly

Check Rubber Parts Kit for 3/4" Series 4000B/LF4000B Reduced Pressure Zone Assembly