Culligan Gold Series Rotary Style 1" Bypass Valve w/ Unions Adapted to 3/4" Copper Male Threads. This will fit all Culligan Gold series control valves that utilize the "L" shaped pins to secure bypass valve to control head. All of the four internal seals have been replaced in the bypass valve. The 3/4" brass Pro Press male adapters are brand new. The gaskets securing the adapters to the bypass are also brand new. See images of bypass w/ adapters you will receive.