Abstract: A valve has a position sensing mechanism including at least one Hall sensor and a signal transmitter, wherein the Hall sensor senses magnetic field components in a first measuring direction and in a second measuring direction orthogonal thereto, wherein the two measuring directions are arranged in a planar measurement zone of the Hall sensor. The signal transmitter is an axially polarized magnet which is arranged on a valve tappet linearly displaceable along an axis of movement such that the poles thereof lie in the axis, wherein the axis runs parallel to the first measuring direction and at a distance from the measurement zone along a surface normal of the measurement zone. An imaginary centerline is defined on the measurement zone through a center of the measurement zone and along the first measuring direction, wherein the axis is arranged at a distance from the centerline along the second measuring direction.