| 摘要 |
<p>The control valve has a plug held by a movable control member and working against a seat, the plug being guided by a holder acting against its periphery and lifted free of the holder against spring action. The holder forms a sealing seat for the plug, and is mounted on the edge of a hollow control member subjected to the pressure of a medium on the inside. The plug can be disc-shaped, while both the valve and sealing seats are flat.</p> |
