| 摘要 |
<p>The hose system has a hose (10) wound onto and from a drum (9) and connected to a water mains. A device is provided for as far as possible completely emptying the hose after use. To this aim, a ventilation valve (19,20) in the region before or in the drum can be opened to empty the hose. The ventilation valve with a mains water supply valve or shut-off valve (6) is integrated into a switchable valve so that the hose can be selectively connected to the mains supply or ventilated for emptying it.</p> |
