Abstract: The disclosure relates to a valve, comprising a main piston for actuating a main volumetric flow and a pilot piston for actuating a pilot volumetric flow. The main piston and the pilot piston are guided in a valve housing in a longitudinally movable manner, and the pilot piston can be actuated using a magnetic device. The position of the main piston can be set using the pilot piston in that a fluid pressure acting on the main piston is signalled via a fluidic connection into a pilot chamber comprising the pilot piston which keeps the main piston in the closed position thereof, said closed position cutting of the main volumetric flow.

Abstract: The disclosure relates to a valve, e.g., a proportional valve, comprising a main piston for actuating a main volumetric flow and a pilot piston for actuating a pilot volumetric flow. The main piston and the pilot piston are guided in a valve housing in a longitudinally movable manner, and the pilot piston can be actuated using a magnetic device. The position of the main piston can be set using the pilot piston which, based on the movement position thereof, signals the fluid pressure acting on the main piston into a pilot chamber via a fluidic connection or cuts of the fluid connection and connects the pilot chamber to a tank or low-pressure side via another fluidic connection into which a valve is introduced that closes in a leak-proof manner as soon as a fluidic connection is produced between the main piston and the pilot chamber.

Abstract: The disclosure relates to a valve, comprising a main piston for actuating a main volumetric flow and a pilot piston for actuating a pilot volumetric flow. The main piston and the pilot piston are guided in a valve housing in a longitudinally movable manner, and the pilot piston can be actuated using a magnetic device. The position of the main piston can be set using the pilot piston in that a fluid pressure acting on the main piston is signalled via a fluidic connection into a pilot chamber comprising the pilot piston which keeps the main piston in the closed position thereof, said closed position cutting of the main volumetric flow.

Abstract: The disclosure relates to a valve, e.g., a proportional valve, comprising a main piston for actuating a main volumetric flow and a pilot piston for actuating a pilot volumetric flow. The main piston and the pilot piston are guided in a valve housing in a longitudinally movable manner, and the pilot piston can be actuated using a magnetic device. The position of the main piston can be set using the pilot piston which, based on the movement position thereof, signals the fluid pressure acting on the main piston into a pilot chamber via a fluidic connection or cuts of the fluid connection and connects the pilot chamber to a tank or low-pressure side via another fluidic connection into which a valve is introduced that closes in a leak-proof manner as soon as a fluidic connection is produced between the main piston and the pilot chamber.

Abstract: The disclosure relates to a valve, comprising a main plunger for controlling a main volume flow and comprising a pilot-control plunger for controlling a pilot-control volume flow. The main and pilot-control plungers are longitudinally moveably guided in a valve housing and the pilot-control plunger can be actuated by a magnetic device. The position of the main plunger can be adjusted by the pilot-control plunger in that a fluid pressure at the main plunger is communicated, via a fluid connection, into the pilot control chamber containing the pilot-control piston, which keeps the main plunger in its closed position blocking the main volume flow when the magnetic device is not actuated. When the magnetic device is actuated, the pilot-control plunger moves into a position in which the fluid pressure falls in the pilot-control chamber until the main plunger moves into an open position controlling the main volume flow.