The PVC DWV coupling features a hub x hub connection and connects PVC DWV piping lengths with solvent weld connections. Polyvinyl chloride (PVC) is the most frequently specified of all thermoplastic materials because of its light weight- durability- and cost-effectiveness. PVC DWV is easy to install and is joined by solvent cementing or threading. PVC fittings exhibit high corrosion and chemical resistance and will not rust- scale- pit or corrode.