1-1/2" in flush PMC | 1-1/2" flush PMC | Copper x Copper | 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 | Spigot x Socket Weld | Threaded MIP | Threaded True Union | 3/4" x 1/2"