Patent ID: 8579254

Claim:
An electromagnetic drive for a valve, the electromagnetic drive comprising: a housing comprising at least one electromagnetic circuit comprising: a coil wound onto a coil support, a valve closing member, at least one magnetizable reflux member, at least one core, the core being arranged only at an end of the electromagnetic driving facing the valve closing member and, an armature having an annular shape at least on a side facing away from the valve closing member, the armature being configured so as to move between a first end position and a second end position so as to act at least indirectly on the valve closing member, a device configured to fix the armature in a non-energized state, and an adjustment device having an adjustment screw, the adjustment device being configured to adjust a magnetic force, and the adjustment screw being configured to be insertable through the at least one magnetizable reflux member or through the core into the armature, wherein supplying the coil with an electric current causes the armature to move into the first end position or into the second end position.