Connect two lengths of 3 in. single-wall corrugated pipe with the HDPE Corrugated Internal Coupling. The coupler also works with the EZflow® Gravel-Free French Drain System (EZ-0701F) to connect the 3 in. pipe found inside each bundle together, or to connect the EZflow system to 3 in. single-wall corrugated pipe. This coupling is used to connect two pipes of the same size and type.
The Corrugated Internal Coupling is made of high-density polyethylene (HDPE). Meets applicable ASTM standards. For use in non-pressurized underground sewer and drainage applications; maximum working pressure of 5 psi.