Spears P100 Series PVC DWV Pipe Fitting, Coupling, 8" Hub Coupling for connecting two pipes with the same diameter in a straight run Hub ends for connecting to male unthreaded pipes or fittings PVC for corrosion resistance, high strength, and less weight than fittings made from metal Operating temperature range of 73 to 140 degrees F (23 to 60 degrees C) Complies with ASTM D2665 and ASTM D3311 and certified to NSF/ANSI International Standard 14 (NSF-dwv) and NSF International Uniform Plumbing Code (NSF-U.P. Code)