| 摘要 |
<p>The valve has a two-part housing (3,3') whose flow paths are joined by the flow path in a stop valve (10). The stop valve is movable inside the housing between annular seals one of which at least is pressed by at least one plate spring against the housing part containing the seal, and is switched by a selector shaft (12) between a position opening and closing the flow path. A cavity is next to the side of the seal (11) pressed by the plate spring against the stop valve. The cavity is connected to the flow path (5) through the housing part containing the seal.</p> |
