| 摘要 |
<p>The device has a tubular body with dosing elements at intervals, each with a first chamber connected to the interior of the body and via a labyrinth to a second chamber sealed to the inside wall of the body, and a through opening in the body wall near the second chamber from which water exits in doses with a cover that is pressed out by emanating water during watering and that essentially closes the opening when the pressure drops inside the body. The device has an extruded plastic tubular body (1) in which dosing elements are inserted at intervals, each with a first chamber connected to the interior of the tubular body and connected via a labyrinth to a second chamber butted to the inside wall of the body in sealed manner, and a through opening (15) in the body wall near the second chamber from which water exits in doses. The though opening has a cover (17) that is pressed out by emanating water during watering and that essentially closes the opening when the pressure drops inside the tubular body.</p> |
