| 摘要 |
The invention relates to a valve device, in particular in the form of a proportional pressure regulating valve, comprising a valve piston (12) which is guided in a longitudinally movable manner in a valve housing (10) and which connects a utility connection (A) to a pressure supply connection (P) and to a tank or return flow connection (T) dependent on the displacement position of the valve piston, and can be actuated by means of an actuating device (48), in particular in the form of an actuation magnet (28) that can be supplied with current. The valve device is characterized in that a control device (50) is provided between the valve piston (12) and the actuating device (48), said control device allowing the valve piston (12) to become pressureless on the valve piston side (52) facing the actuating device (48) in the direction of the tank or return flow connection (T) such that the valve piston (12) is displaced in the direction of the actuating device (48) under the supply and/or utility connection pressure, which can be actuated during operation, when the actuating device is not actuated. |
| 主权项 |
1. A valve device, in particular, in the form of a proportional pressure regulating valve, having a valve piston (12) which is guided in a longitudinally movable manner in a valve housing (10), and which connects a utility connection (A) to a pressure supply connection (P) and to a tank connection or return flow connection (T) depending on the movement position of the valve piston, and which can be controlled by means of an actuating device (48), in particular in the form of an energizable actuating magnet (28), characterized in that a control device (50) is provided between the valve piston (12) and the actuating device (48), the control device allowing the valve piston (12) to be rendered pressureless on the valve piston side (52) facing the actuating device (48) in the direction of the tank connection or return flow connection (T), such that the valve piston (12) is displaced in the direction of the actuating device (48) under the supply connection and/or utility connection pressure, which can be controlled during operation, when the actuating device is not actuated. |
