| 摘要 |
<p>A hose-break valve comprises a valve housing and a sliding gate movable therealong and is connected with a pressure hose which is surrounded by a protective sleeve, while defining a space filled with a pressure medium. The sliding gate is under the action of, on the one hand, the pressure medium in said space and, on the other hand, a loading device acting opposite the pressure medium. First and second pressure relieving devices are provided for closing the valve by means of the loading device when the pressure of the pressure medium in said space respectively exceeds an upper limit value and falls short of a lower limit value.</p> |
