Aluminum valve (hose outlet) for fueling, etc. A metal sleeve is used in the body, and a magnet is used on the plug, so that the plug perfectly adheres to the housing.
Dimensions:
outer diameter: 23 mm
mounting hole (diameter): 14 mm
inner hole of the sleeve: 8 mm
outer diameter of the plug (under the fuel hose): 3.5 / 4 mm