DOOR VALVE

摘要

In a known door-operating valve for a pneumatically actuated door system having two integrated 3/2 way valves controlled by means of solenoid pre-control valves, it is known, in the case of an emergency shut-off of the door drive, to actuate both 3/2 way valve via an upstream AND element in such a way that the door drive is pressure- relieved in both directions of movement. The AND element is susceptible to faults and in addition complicated and costly. In order to replace the AND element, the invention proposes the arrangement of a double valve which can be controlled in any desired way.