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