Abstract: The invention relates to a cooling device for electrochemical and electrotechnical components, said cooling device comprising a component housing, wherein the component housing is equipped with an inlet and an outlet, wherein the component housing comprises a main valve and a control valve, wherein the main valve is arranged in a first region of the component housing downstream of the inlet and is designed to control a coolant feed into the component housing, wherein the control valve is arranged in a second region of the component housing and is in fluid connection with the main valve, wherein the control valve is designed to control an opening position of the main valve according to a coolant filling level in the component housing. The invention also relates to a cooling system and to a valve arrangement.

Abstract: A valve suitable for a fuel tank may include a valve housing having a housing part, and a float configured for closing a vent opening, the float being movably arranged inside the valve housing along a middle longitudinal axis running in an axial direction upward or downward. A lower section of the float faces away from the vent opening and faces toward the housing part of the valve housing. At least one spring element is at least partially arranged in or on the housing part and/or is at least partially formed by the housing part. The spring element contacts the float at least when the float moves downward in the valve housing.

Abstract: A valve suitable for a fuel tank may include a valve housing having a housing part, and a float configured for closing a vent opening, the float being movably arranged inside the valve housing along a middle longitudinal axis running in an axial direction upward or downward. A lower section of the float faces away from the vent opening and faces toward the housing part of the valve housing. At least one spring element is at least partially arranged in or on the housing part and/or is at least partially formed by the housing part. The spring element contacts the float at least when the float moves downward in the valve housing.