The PVC Schedule 40 90-degree elbow is used in cold water pressure distribution systems including irrigation- pool and spa- potable water and chilled water applications. Polyvinyl chloride (PVC) is the most frequently specified of all thermoplastic materials because of its light weight- durability and cost-effectiveness. PVC Schedule 40 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.