| 摘要 |
<p>A device, preferably a terminal valve, the complete valve being provided with a cone (9), which cooperates with a valve seat (10), said components also cooperating with a veil (12) and the valve seat (10) being a part of a seat ring (19), which is a combined sealing element, which seals against the cone (9) as well as against the valve body (1), at the same time as the seat ring is a valve seat (10), and the cone (9) having a cylindrical portion (46), which is provided with slits (49) and (50), the passage area, which is obtained, causing a flow, which corresponds to a modified logarithmic function.</p> |
