| 摘要 |
The invention relates, inter alia,to a device (10, 12) for the controllable delivery of at least one medium, comprising a medium inlet (24b, 16b) for the medium, which inlet can be connected to a medium supply, a medium outlet (24e, 16e) for the medium, which outlet can be connected to a destination container for the medium, a flushing medium inlet (24c, 16c), which can be connected to a flushing medium supply, a pump outlet (29a), which can be connected to an input side of a pump (35), and a pump inlet (29b), which can be connected to an output side of the pump (35). The device further comprises a final control element (13), which in a first control position (figure 19) provides a communicative connection between the medium inlet (24b) and the pump outlet (29a) and at the same time between the pump inlet (29b) and the medium outlet (24e), and which in a second control position (figure 21) provides a communicative connection between the flushing medium inlet (24c) and the pump outlet (29a) and at the same time between the pump inlet (29b) and the medium outlet (24e). |
