Make irrigation installations easier with the compact Checkmate PVC Swing Check & Ball Valve Combination, IPS 1-1/2 in. UC X UC. The checkmate valve has less bulk, making it easier to install, and conveys water through the valve when the flapper and ball valve open. This easy-fit valve connects two 1-1/2 in. pipes in an irrigation or other pressurized system and prevents the backflow of water. Prevents costly property damage, pipe corrosion, and system issues. Durable check valve is made of PVC plastic. Use fittings and other valves to set up a new irrigation system, expand an existing system, or make repairs.