| 摘要 |
Apparatus ( 10 ) is defined for regulating the level of liquid on a first side of a barrier ( 12 ) with respect to a moveable level of liquid on a second side of the barrier. The apparatus includes an inlet conduit ( 30 ) for positioning on the second side of the barrier and having an inlet ( 38 ) that is arranged for moving up and down with the liquid level, and an outlet conduit ( 16 ) for positioning on the first side of the barrier ( 12 ) and in liquid communication with the inlet conduit ( 30 ) across the barrier. The outlet conduit has an outlet ( 22 ) that can be located at a predetermined liquid level at the first side.
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