Spears 448 Series PVC Pipe Fitting, Cap, Schedule 40, 3" NPT Female Cap for closing the end of a pipe or fitting Female NPT threads for connecting to male NPT threaded pipes 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