| 摘要 |
1. A valve for cyclic drainage of liquid, in particular in the terminals of a vacuum sewage system, located in a collective basin, to which run a gravitational in-feed line and a vacuum out-feed line, characterized in that it is a float in the form of a vessel (3), open above and located below the outlet opening (8) of the in-feed line (2), and the float has at the bottom a closing component (4) attached, in particular conical, preferably ending with a needle guide (5), located inside the vacuum line (6), while the axis of the closing element (4) passes through the centre of gravity of the vessel (3), and the vessel (3) is immersed in the liquid deposited at the bottom of the basin (1) and the height of the side walls of the vessel (3) is at least equal to the distance of the edge (7) of the inlet of the vacuum line (6) from the bottom of the basin (1).<IMAGE>
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