Couplings | Male National Pipe Thread (MNPT) | Socket Weld x Threaded | Sweat x MIP | Sweat | Threaded x Threaded | Threaded | CPVC 80 Pipe and Fittings | Galvanized Pipe and Fittings | 1-1/4" x 1-1/4" | 2-1/2" x 1-1/2" | 3/8" x 1/4" | 4" x 1-1/2"