ProSource KJ-003 Coupling 4 x 4 in Corrugated Polyethylene Drainage Pipe and Irrigation Systems to Plastic DWV Pipe

The ProSource is for specifically to be used underground. It's designed with a ring stopper on the inside of the coupling to connect corrugated polyethylene drainage pipe and irrigation systems to plastic DWV pipe. Not for use on pressurized plumbing systems.