Apollo/Conbraco 1/2" 4A DC 1st or 2nd Check Assembly

Apollo/Conbraco: 4A-003-02 - 1/2" First or Second Check Assembly for 4A DC

-First or Second Check Module for the 4A-100 Double Check

-Second Check Module for the 4A-200 Reduced Pressure Zone

-Check Module for the 4A-500 (1/2" - 3/4") Pressure Vacuum Breaker Series

Kit Includes: Check Assembly, Cover O-Ring, Check Seat O-Ring, Bonnet O-Ring