Spears 447-B Series PVC Pipe Fitting, Cap, Schedule 40, Black, 3/4" Socket Cap for closing the end of a pipe or fitting Socket opening for connecting to a male pipe or fitting PVC for chemical and corrosion resistance, high strength, and less weight than fittings made from metal Maximum operating temperature of 140 degrees F Meets ASTM D1784 and D2466 standards for quality assurance, and certified by NSF International for potable water service