| 摘要 |
<p>The installation comprises a vacuum line (28) to which are connectable a vacuum source on one hand, and on the other hand, via suction valves, drain points for exhausting waste water and air. The vacuum line has a height profile (10) for drain water collection, contg. low and high points (12,14). The vacuum line has two sections with different geometrical extension in the region of the low and high points. At rest, the max. collection (16) of waste water in the region of the low points of the first section has a vol. smaller than that of the low points of the second section.</p> |
