| 摘要 |
<p>A gravity feed pump shaft is used in association with ponds, swimming pools, water trap basins and/or filter basins. The pump shaft is located at the lowest point of the basins and has an effluent pump (6) at the lowest point. The pump shaft is esp. fabricated of glass fibre and has a stopper (5) blocking an inlet (4). The lower part of the pump shaft (1) has a grid (2). The shaft is covered by a closure (7).</p> |
