NIBCO 4701 Series CPVC Pipe Fitting, Coupling, 1/2" Slip Coupling for connecting two pipes with the same diameter in a straight run Slip openings for connecting to male unthreaded pipes or fitting 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