A hydraulically controllable globe valve, comprising: a stem piston capable of being moved from a first end position in a direction of a second end position; a hydraulic spring arrangement connected to a pressure source and for applying a pressure to the stem piston the hydraulic spring arrangement includes a mechanical biasing element; and a pressure control arrangement for maintaining constant the pressure applied by the hydraulic spring arrangement on the stem piston while the stem piston moves from the first end position in the direction of the second end position by connecting the hydraulic spring arrangement to the pressure source during a variable portion of a valve lift operation.

 GLOBE VALVEThe globe valve according to claim 1, wherein the globe valve corresponds to a gas exchange valve of an internal combustion engine.

The globe valve according to claim 1, wherein the pressure control arrangement variably defines a portion of the valve lift operation during which the pressure control arrangement maintains constant the pressure on the hydraulic spring arrangement as a function of a counter-pressure acting upon the globe valve.

The globe valve according to claim 1, further comprising: a valve housing surrounding the stem piston, wherein: the stem piston includes a control groove and a pressure channel, the pressure control arrangement includes, in order to connect the hydraulic spring arrangement to the pressure source, a first annular space provided in the valve housing and capable of being connected to the pressure source, the control groove is capable of being connected to the hydraulic spring arrangement via the pressure channel, and the control groove is connected to the first annular space during the variable portion of the valve lift operation.

A hydraulically controllable globe valve, comprising: a stem piston capable of being moved from a first end position in a direction of a second end position; a hydraulic spring arrangement connected to a pressure source and for applying a pressure to the stem piston; a pressure control arrangement for maintaining constant the pressure applied by the hydraulic spring arrangement on the stem piston while the stem piston moves from the first end position in the direction of the second end position by connecting the hydraulic spring arrangement to the pressure source during a variable portion of a valve lift operation; a valve housing surrounding the stem piston;Globe Valves and a pressure channel, wherein: the stem piston includes a control groove, the pressure control arrangement includes, in order to connect the hydraulic spring arrangement to the pressure source: a first annular space provided in the valve housing and capable of being connected to the pressure source, and a further annular space capable of being connected to the hydraulic spring arrangement via the pressure channel, and the further annular space is connected to the first annular space via the control groove during the variable portion of the valve lift operation.

The globe valve according to claim 5, further comprising: a hydraulic actuator for simultaneously triggering a movement of the stem piston from the first end position in the direction of the second end position, wherein the first annular space is capable of being connected to the pressure source via the hydraulic actuator.

The globe valve according to claim 5, further comprising: a non-return valve for preventing the pressure from decreasing in the hydraulic spring arrangement via the pressure channel, the non-return valve being arranged in the pressure channel.

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