Reducing Coupling, CPVC, Schedule 80, For Pipe Schedule Schedule 80, 4 in, Female, Socket, 5 1/8 in, 2 in, Female, Socket, 4 3/8 in, Includes Seal Seal Not Included, For Pipe Outside Diameter 4 in, 4 15/16 in Overall Length, 320 psi Maximum Operating Pressure, 32 Degrees to 200 Degrees F