Patent ID: 8434734

Claim:
A valve with an inlet, an outlet and, between them, a valve seat that interacts with a valve element, wherein the valve element is connected to an electromagnetic actuator with a single coil and at least two armatures being movable along an axis and being acted upon by a magnetic field generated by the coil, wherein one armature is acted upon by a larger drive force from the magnetic field than another armature, said valve further comprising: a stationary armature serving as counter flange for a single closing spring acting upon a transmission element that is connected to the valve element, said closing spring loading the valve element in the direction of the valve seat, a first movable armature of the at least two armatures forming a first air gap with the stationary, armature, a second movable armature of the at least two armatures forming a second air gap with the first movable armature, and wherein, when said coil is supplied with current and a magnetic field occurs, drive force from the magnetic field pulls the first movable armature toward the stationary armature under reduction of the first air gap, and when the current intensity is further increased, the second movable armature is pulled toward the first movable armature under a reduction of the second air gap, and when the current through the coil is turned off, the closing spring ensures that the valve element is brought to rest on the valve seat.