Coupling PVC Schedule 80 For Pipe Schedule 80 2 1/2 in Female Socket 3 7/16 in 2 1/2 in Female Socket 3 7/16 in Includes Seal No For Pipe Outside Diameter 2 1/2 in 3 3/4 in Overall Length 420 psi @ 73 Degrees F Maximum Operating Pressure 32 Degrees to 140 Degrees F