| 摘要 |
According to the invention, in order to improve the reliability and effectiveness of a colour change system, a media valve (3) is actuated using compressed air which can only be supplied when a stator (1), in which said media valves (3) are located, is in contact with a selection head (2). A check valve (10) that closes when the stator (1) and selection head (2) are spaced apart from one another is also located in the media inlet (8) of said selection head (2), for the purpose of implementing a media valve (3) changeover. During this changeover time, rinsing liquid can be fed into the media line (7) by means of a rinsing line (11). |
