| 摘要 |
The attachment for orientably holding an outlet nozzle comprises, apart from the attachment body (3), an articulation arm (7) placed therein, the arm being placed in a way allowing it to be moved longitudinally and at the same time being in the form of a shut-off valve which may, depending on its final position, close or completely open an inlet for the medium through the inlet duct. <IMAGE>
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