| 摘要 |
<p>A device (10) for restricting the flow of water through a down spout of a building roof guttering system. The device includes a housing (12), the housing (12) including a water flow path (28) extending between a water inlet (16) and a water outlet (22). The device (10) also includes a means (32) for restricting water flow along the water flow path (28). The water flow restriction means (32) is provided in the water flow path (28) between the water inlet (16) and water outlet (22). The device (10) also includes a port (30) for the supply of water to the device (10) from a water source. The port (30) is provided in the water flow path between the water inlet (16) and the water flow restriction means (32).</p> |
