The highly elastic sleeve anchored in the valve housing is surrounded by the so-called control space.
固定在阀壳体上的高弹性套被所谓的控制空间包围。
If compressed air is applied to this space, the initially round sleeve distorts, becomes oval and then lies flat in a preset position.
如果压缩空气供应到空间，使最初的圆形套筒变形，变成椭圆型然后平躺在某一设定位置。
The pinch valve is now closed, as long as the control pressure is maintained.
夹紧阀关闭时，只要保持控制压力。
If the control space is vented, the sleeve opens by means of its own reset force and returns to the round, full cross-section with the help of the medium pressure.
如果释放控制空间，套筒通过其自复位力打开并回到圆形状态，在介质压力的帮助下回到全横截面。
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