| 摘要 |
1. The device designed to protect an overground hydrant against unscrewing has a hydrant shaft and a hand wheel. Characterized in that: The hydrant shaft (1) has a cylindrical end (2). The hand wheel (3) in the form of a dome (4) is secured on the shaft end. The hand wheel (3) has a stepping opening (5), which accommodates the slide (6) and the key (7).
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