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AssigneeHydac Fluidtechnik GmbH
InventorsPeter Bruck, Christian Groh, Frank Schulz, Andre Jäger, Lennard Günther, Jan Frederik Lübbert
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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.
A valve, comprising a main piston for actuating a main volumetric flow and a pilot piston for actuating a pilot volumetric flow, wherein the main piston and pilot piston are guided so as to be longitudinally movable in a valve housing and wherein the pilot piston can be actuated using a solenoid device, wherein the position of the main piston can be actuated using the pilot piston which, depending on the travel position thereof, signals the fluid pressure acting on the main piston into a pilot chamber via a fluid connection or cuts off this fluid connection and connects the pilot chamber to a tank or low-pressure side via a further fluid connection into which a valve device is introduced which closes in a leak-proof manner as soon as the one fluid connection between the main piston and the pilot chamber is established;
A valve, comprising a main piston for actuating a main volumetric flow and a pilot piston for actuating a pilot volumetric flow, wherein the main piston and pilot piston are guided so as to be longitudinally movable in a valve housing and wherein the pilot piston can be actuated using a solenoid device, wherein the position of the main piston can be actuated using the pilot piston which, depending on the travel position thereof, signals the fluid pressure acting on the main piston into a pilot chamber via a fluid connection or cuts off this fluid connection and connects the pilot chamber to a tank or low-pressure side via a further fluid connection into which a valve device is introduced which closes in a leak-proof manner as soon as the one fluid connection between the main piston and the pilot chamber is established;
A valve, comprising a main piston for actuating a main volumetric flow and a pilot piston for actuating a pilot volumetric flow, wherein the main piston and pilot piston are guided so as to be longitudinally movable in a valve housing and wherein the pilot piston can be actuated using a solenoid device, wherein the position of the main piston can be actuated using the pilot piston which, depending on the travel position thereof, signals the fluid pressure acting on the main piston into a pilot chamber via a fluid connection or cuts off this fluid connection and connects the pilot chamber to a tank or low-pressure side via a further fluid connection into which a valve device is introduced which closes in a leak-proof manner as soon as the one fluid connection between the main piston and the pilot chamber is established;
Dependencies are inferred from the claim text.