Valve, preferably vacuum valve

A valve comprising a closure member, a valve seat, and a drive unit, the closure member, in a closed position, is pressed against the valve seat and, in a raised position, is raised from the valve seat, and is movable by the drive unit, in a closing direction, from the raised position into the closed position, and for alignment of the closure member as it is pressed against the valve seat, the closure member is mounted on a support body of the drive unit displaceably in at least one direction orthogonally or transversely to the closing direction;

• and
• a pretensioning spring for elastic pretensioning of the closure member in a direction toward a neutral position relative to the support body of the drive unit, wherein the pretensioning spring is configured as a circumferential spring of star-shaped contour, which is disposed in an annular receiving space between the support body and the closure member.