Abstract: An electromagnetic valve for an anode supply of a fuel cell system, the electromagnetic valve configured as a purge or drain valve including an actuator including a magnet coil configured to electromagnetically actuate an armature, and a valve plunger operatively connected with the armature; a valve seat openable and closable as a function of an actuation of the valve plunger so that a media connection between an inlet and an outlet is controlled through a valve chamber, wherein the valve seat and the inlet are configured at a connection spout connected with the actuator, and wherein an additional magnet coil is provided as a heating coil.

Abstract: An apparatus for imparting a braking force to an advancing strand is disclosed, and which includes a mechanical compensating arm brake followed in series by a movement dependent brake. The movement dependent brake may take any one of several forms, including an eddy-current brake which is directly connected to a roll which is driven by the strand, a hysteresis brake which is directly connected to a roll which is driven by the strand, or a brake of any type which is connected to a roll which is driven by the strand via a clutch, such as a centrifugal clutch, which is operated as a function of the speed of the movement of the strand.