Actuating mechanism of a gas valve unit

The invention relates to a gas valve unit for adjusting the volumetric gas flow supplied to a gas burner of a gas device, in particular a gas cooking appliance, wherein the gas valve unit comprises at least two open/close valves. According to the invention, the open/close valves can be actuated by moving at least one magnetically active body, in particular a permanent magnet, relative to the open/close valves. In order to actuate the open/close valve, the position of the magnetically active body, preferably a permanent magnet, can be changed relative to the shut-off member of the open/close valve.