The solenoid valves A23 with EU type examination EU/2016/426 are used as automatic shut-off valves for securing, limiting, shutting off and releasing gas and air supplies at main shut-offs or in front of gas burners. and releasing the gas and air supply at main shut-offs or in front of gas burners. The valves are suitable for the following gases: Gases corresponding to gas families according to DIN EN 437, gases of the 1st, 2nd and 3rd gas family according to G260, aggressive gases such as e.g. bio gas, sewage gas or landfill gas according to G262 (only as a variant with corresponding material design, cladding).