Transition from Drain Waste Vent (DWV)/Schedule 40 (SCH40) fittings to Sewer and Drain (S&D) pipe with the National Diversified Sales 2P42 4" White DWV/SCH40 Spigot x S&D Hub PVC Adapter Bushing. The drain fitting connects 4 in. DWV/SCH40 fittings to spigot and 4 in. S&D pipe to hub. This adapter bushing has a hub and spigot to connect two different pipe and fitting types. The Adapter Bushing is made of polyvinyl chloride (PVC) and makes a Spt X Hub solvent-weld connection. Meets applicable ASTM standards. For use in non-pressurized underground sewer and drainage applications; maximum working pressure of 5 psi. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it.