A mobile tank container arranged to transport a liquid, comprising a circumferential wall which extends around an axis in a driving direction of the mobile tank container and two end walls which close the container volume at the front side and the rear side, wherein the tank container is provided with a valve gear comprising at least one valve which extends into the container volume, such that the valve, when used while the tank container is at least substantially full with liquid, comparatively allows circulation of liquid in the container volume in one tangential circulation direction around the axis or in one axial circulation direction along the axis, or a combination of the two directions, in the open position thereof, and that the valve comparatively impedes circulation of liquid in the opposite circulation direction in the closed position thereof.