Compression | Conpression | G 1/2 B x 1/2 in. Male National Pipe Thread (MNPT) with 1/4 in. Female National Pipe Thread (FNPT) | Insert Barb x FIP | Slip On | Socket Weld x Threaded | Spigot x FIP | Spigot x Threaded | Sweat x FIP | Sweat x MIP | Threaded MIP | 1" x 3/4" | 4" x 1"