| 摘要 |
Improvements in drains for sanitary installations. The drain, in accordance with the improvements of the invention, initially comprises two parts, one acting as a lower frame 1, attachable to the corresponding connecting tube to the general collector, and the other forming an upper frame 4 for installing and attaching of the corresponding upper cover 5, such that between these two parts there is located a supplementary part 9, which may be of greater or lesser height with the purpose of absorbing the different height arising when an asphalt layer 7 is applied to a carriageway or pavement in which the drain is installed, such that any type of repair with the application of a layer of asphalt 7, after the removal of the upper frame 4, and subsequent to its reinstallation, the latter is able to attain the new upper height 8' by intercalating the supplementary part 9 of appropriate thickness. <IMAGE>
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