Couplings | 1-1/2" in flush PMC | G 1/2 B x 1/2 in. Male National Pipe Thread (MNPT) with 1/4 in. Female National Pipe Thread (FNPT) | Gasketed | MIP Threaded | National Pipe Thread (NPT), Flange | Push-to-Connect | Spigot x FIP | Threaded MIP | Threaded | 1-1/4" x 3/8" | 3" x 2-1/2" | 4" x 2-1/2"