| 摘要 |
The invention relates to a drain, provided with
- an inlet opening for carrying liquid for draining into the drain;
- an outlet space which is connected to an outlet opening; and
- one or more unidirectional seals incorporated in the drain and configured to together close the connection in a starting position, and configured to move into a free passage position under the influence of liquid for draining that is present, wherein the one or more unidirectional seals allow passage of the liquid for draining to the outlet space via a passage opening. |
