| 摘要 |
<p>The screen-off disk (1) is made from one piece and has a circular cutout of different diameters for different diameters of pipes (2). The disk is arranged with a housing (3). The disk can be made of different forms and materials. The disk is made from rubber. A tap (4) is placed over the disk and arranged so that water and dirt is prevented from entering behind walls with the disk prevented from moving due to its rubber construction.</p> |
