Spears 439 Series PVC Pipe Fitting, Bushing, Schedule 40, 1" NPT Male x 3/4" NPT Female Bushing for connecting two pipes with different diameters Male NPT threads on one end and female NPT threads on the other for connecting two pipes with different ends 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