Abstract: A device for maintaining a hydraulic pressure, which can be set by a pressure generator, including: an inlet for coupling to the pressure generator; an outlet for providing the hydraulic pressure; at least a first check valve, which is configured to open a flow path from the inlet to the outlet when a first opening pressure is exceeded and to prevent flow in the opposite direction; and a switching apparatus between the inlet and the outlet, wherein the switching apparatus is configured to hold the hydraulic pressure at the outlet if a pressure produced by the pressure generator is greater than a switching pressure, and to reduce the hydraulic pressure at the outlet if a pressure produced by the pressure generator is less than the switching pressure, wherein the switching pressure is less than the first opening pressure. Also described are a hydraulic system, a power-steering system, vehicle, and method.