The invention relates to a device for preserving foods with the help of an inert gas, comprising at least one floor mounting (12) having a gas tank (14,15), a handheld device (1) connected over at least one flexible pipeline, especially a pressure hose, with the handheld device (1) and a food container, which can be closed off gas-tight. The handheld device (1) is provided for connecting the gas tank (14, 15) with a valve unit of the food container and the valve unit has an inlet valve and an outlet valve.