Reducing Coupling, CPVC, Schedule 80, For Pipe Schedule 80, 4 in, Female, Socket, 5 1/8 in, 3 in, Female, Socket, 4 3/8 in, Includes Seal No, For Pipe Outside Diameter 4 in, 4 3/8 in Overall Length, 320 psi @ 73 Degrees F Maximum Operating Pressure, 32...