| 摘要 |
<p>A gully arrangement comprises a housing (1) having an inlet (17) at an upper end thereof, a reservoir (3) in a lower region thereof, and an outlet (7) in a side of the housing at a level between the reservoir and the inlet. A valve (19) is provided in an upper region of the housing and is adapted to close the inlet in the event liquid in the housing rises substantially to the level of the valve.</p> |
