| 摘要 |
<p>A cup-shaped valve body (6) becomes smaller in cross-section towards the bottom for closing and opening a valve outlet (3). A seal cup cooperates with a float (11) on the valve. A cup seal (8) is placed between the valve body and seal cup, and is movable into different closing or opening positions lying across the passage orifices (10) of the valve body. The seal cup has an internal contour that becomes wider towards the top to conform to the external contour of the valve body.</p> |
