The invention relates to a throttle valve comprising a potentiometer with a supporting plate the supporting plate to be mounted on a substrate wherein the supporting plate has an upper side on which the resistance tracks, wiper tracks and the conductor tracks are applied on an underside with spacers. The sliding track is positioned on the base. Thereafter, the second user is actively or passively informed of the created tag and providing access to the created tag. A plurality of tapered, wedge-shaped blocks are arranged on the inner side surfaces of the side members so as to extend toward a middle portion of the support portion. The armature plate can be displaced with respect to the bushing between a flange of the intermediate body and a shoulder of the bushing, for eliminating the rebounds of the openclose element upon closing of the servovalve. Expression vectors and host cells containing such genes or fragments thereof, as well as antibodies to the proteins encoded by these nucleic acids are also included herein.