FIELD: machine building.
SUBSTANCE: invention relates to a switching device for valves. In the switching device for valve (8), recess (14) in element (13), driven by emergency drive (11), is to be made with least one bevelled surface (17, 18), so that locking element (15) which engages with recess (14) can, by disengaging, come out of recess (14) when emergency drive (11) is triggered. In this case, it is advantageous that the emergency drive can independently release the lock as soon as the actuator releases the locking element. Thus, it is possible to avoid failures of the switching device for valves, where due to an error in locking the emergency drive in an abnormal mode, said emergency drive cannot move the output shaft to the desired end position.
EFFECT: basis of the invention is the task of creating a switching device for valves that works simply and reliably.
15 cl, 7 dwg
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