Insert Barb x Insert Barb | Compression | Male National Pipe Thread (MNPT) | MIP Threaded | Socket Weld x Threaded | Sweat x MIP | Threaded x Threaded | Threaded | Threaded Ball Valves | 1" x 1/8" | 1" x 3 | 3-1/2" - 3" x 1" | 3" x 1"