Control valve

A control valve for regulating or controlling a cryogenic process medium, comprising a valve housing with a main body having a valve inlet and valve outlet, a valve seat arranged in the flow duct between the valve inlet and valve outlet, a valve cage arranged in the flow duct between the valve inlet and valve outlet, and a valve member which is movable in an axial direction with respect to the valve seat and valve cage and which is connectable to a control element rod of a drive via a drive rod,

• wherein the valve housing has an extension body extending the main body in the axial direction and a valve cover which closes the extension body, the control element rod of the drive to which the valve member is connected to the drive rod being configured to sealingly pass through the valve cover,
• wherein the control valve furthermore comprises a circulation barrier arranged in the valve housing and configured to prevent circulation of said cryogenic process medium in the extension body,
• wherein the circulation barrier and the valve cage are in contact with each other via contact pressure surfaces which are formed so as to correspond to one another and are situated opposite one another in the axial direction, and in that the circulation barrier and valve cage that are in contact with one another via the opposing contact pressure surfaces, are jointly fixed in the valve housing via a fastener, and
• wherein the components valve cage and valve seat, which form a structural unit, are connected to one another via a screw connection formed between the valve cage and the valve seat.