| 摘要 |
A maintenance unit for the flushing of buried drains by fluid or air comprising of a curved tube, height and length adjustable sections 3, bonding lugs 2, a threaded outfall 5 and a removable or push in cap 1.The height adjustable unit will preferably be installed at a variable distance, either horizontally or vertically from the buried drain and can accommodate mountings and different types of buried drain. The unit will be flush mounted to the surface and access will preferably be via a threaded or push-in removable cap. The threaded outfall will preferably be situated at the rear of the lower opening to facilitate cleaning by air pressure. |
