| 摘要 |
<p>The invention relates to a stormwater gully and comprises a chamber 2 in which an outlet assembly 8 is installed. The outlet assembly 8 comprises filter units 12 connected to an outlet housing 14. In use, stormwater can flow from the chamber in an upwards direction through filter units 12 into the outlet housing 14. The outlet housing 14 has an outlet (20 figure 2), which extends from the gully. At high rates of flow, the water level in the chamber 2 will rise until water can flow into the outlet housing 14 through bypass inlets 48. The bypass inlets 48 are connected to the interior of the housing 14 by siphons defined by arched regions 58 of a top cover (56 figure 2). The siphons allow rapid discharge of water until the water level returns below the level of the bypass inlets 48. A slow drain down feature (66 figure 5) is provided which enables the chamber 2 and outlet assembly 8 to be drained below the level of the primary inlet 46. A later embodiment relates to a drain down outlet for a vessel.</p> |
