NIBCO 4703 Series CPVC Pipe Fitting, Adapter, 3/4" Slip x NPT Female Adapter for connecting pipes or fittings of different types Slip opening on one end and female NPT threads on the other for connecting pipes with different ends CPVC for better ductility and resistance to high pressures and temperatures than PVC Smooth interior finish for reduced friction and material buildup Meets specifications ASTM D2846 for quality assurance