Abstract: Disclosed is a device for dispensing a fluid, in particular a carbonated beverage, from a storage chamber of a container towards the outside via at least one closeable discharge port, comprising a pressure reservoir which is separated from the storage chamber and in which a pressurized propellant is accommodated, and which can be connected to the storage chamber via a pressure regulation mechanism. The pressure regulation mechanism includes an axially moveable regulating element that is impinged upon by means of a spring in the direction of an open position in which propellant is discharged from the pressure reservoir into the storage chamber. The ambient pressure to which the container is exposed acts upon the regulating element in the direction of the open position, and the internal pressure inside the storage chamber of the container acts upon the regulating element in the direction of the closed position.

Abstract: Disclosed is a device for dispensing a fluid, in particular a carbonated beverage, from a storage chamber of a container towards the outside via at least one closeable discharge port, comprising a pressure reservoir which is separated from the storage chamber and in which a pressurized propellant is accommodated, and which can be connected to the storage chamber via a pressure regulation mechanism. The pressure regulation mechanism includes an axially moveable regulating element that is impinged upon by means of a spring in the direction of an open position in which propellant is discharged from the pressure reservoir into the storage chamber. The ambient pressure to which the container is exposed acts upon the regulating element in the direction of the open position, and the internal pressure inside the storage chamber of the container acts upon the regulating element in the direction of the closed position.

Abstract: Control system for electro-pneumatic compressed air brakes for rail vehicles with a servo valve (1) for control of a pilot pressure and for actuation of electrical contacts (40, 41) operable over a coupling (4) such that, at the beginning of an adjustment of the servo valve in the braking direction, at least one contact (40) is always closed while, at the beginning of an adjustment in the releasing direction, a different contact (41) is closed. The two contacts control the excitation of a brake and release contactor (50, 51) monitoring a brake and release circuit (56, 62) which, when switching, interrupts the circuits monitored by the contacts (40, 41) of the servo valve (1) by opening the coupling (4). Holding circuits for the brake and the release contactor (50, 51) are monitored by contacts of a second switching system (34); a piston (25) actuated by the pilot pressure against the main air line pressure serves to control the latter contacts.