| 摘要 |
<p>The present invention relates to a system of sewer lines, comprising:
- one or more sewer lines; and
- one or more devices arranged in a sewer line for adjusting the passage opening of a sewer line, the device comprising:
- a frame;
- a closing member arranged movably in the frame;
- drive means arranged close to the closing member for driving the closing member; and
- an actuating unit which is placed at a distance from the drive means and which can be operatively coupled to and uncoupled from the drive means for actuation thereof via one or more fluid conduits. The invention also relates to a device for adjusting the passage opening of a sewer line for use in such a sewer line system.</p> |
