| 摘要 |
<p>An overflow device for use with sinks and the like is described. The overflow device comprises a body adapted to be positioned adjacent the exterior of a sink bowl, the body having an inlet and an outlet joined by an inverted-U siphon passage, and a vent adapted to communicate ambient air to the top of the siphon passage, the vent being arranged to close when water level in the sink reaches a predetermined level. In at least one embodiment the vent has no moving parts.</p> |
