Dura 2" Threaded MIP x 2" Swivel. PVC is a Schedule 40 DWV White Pipe designed for both above and below ground DWV (Drain, Waste, Vent) Applications. PVC is generally used for both commercial and residential plumbing construction, and residential sprinkler systems. PVC and its fittings are glued together with PVC glue and primer. These, the glue and primer, are designed to create a seal that is leak-proof and durable like the PVC pipe. The PVC Dura 2" Threaded MIP x 2" Swivel is a double-threaded adapter that features large male threads and small female threads. Generally used in sprinkler systems.