The NIBCO 1-1/2 in. PVC DWV male adapter is used in residential and commercial drain, waste and vent systems. The PVC DWV male adapter features a hub x male NPT thread connection and provides a means for adapting a solvent weld connection to a threaded connection. Polyvinyl chloride (PVC) is the most frequently specified of all thermoplastic materials because of its light weight, durability, and cost-effectiveness. Color: white.