The PVC DWV plug features a male NPT thread connection to fit inside a fitting to seal the end of a pipeline or a location where future additions may be made to the piping system. 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. Maximum service temperature 140 degrees F.