Insert Barb x Insert Barb x Insert Barb | Compression x FIP | Male National Pipe Thread (MNPT) | Socket Weld x Threaded | Sweat x FIP | Sweat x MIP | Threaded x Threaded | Threaded | 1-1/2" | 2" x 1/2" | 3/8" x 1/8" | 4" x 1-1/2"