| 摘要 |
The invention relates to a device in a vacuum transportation system for liquids, preferably a vacuum sewage system, comprising a transportation conduit (12) which is under vacuum and via a normally closed valve (13) and a suction pipe (14) connected to a liquid collecting container (10). The closing movement for the valve (13) is activated by the change in pressure which occurs when air entering after the liquid flows into the system.
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