The hydraulic emergency valve is used in hydraulic systems for actuation of a downstream consumer, which must be activated according to pressure. It is actuated directly, preferably from a hydraulic source (master cylinder – hydraulic pump). The pressure-dependent, downstream consumer (e.g. brake) is installed in the pressure output line, while the consumer to be actuated (e.g. clutch) is inserted in the pressure input line (e.g. clutch before brake or speed adjustment before brake).