The invention relates to a device for operating a fire-extinguisher, having a gaseous extinguishing agent which is stored in a plurality of high-pressure gas cylinders. The first cylinder of a set of cylinders is designed as a control or pilot cylinder and is set up such that it opens the following cylinders by means of its highly pressurised gas. The pilot cylinder and the following cylinders are each provided with a directly controlled piston valve, the control line starting from the control valve opening out into branch lines to the following cylinder valves or into a collecting line. Discharge lines lead in each case from the cylinder valves to the collecting line.
