| 摘要 |
<p>A bush (2) is welded to the side of the coolant pipe (3), surrounding an opening. Its outer diameter is no greater than the pipe outer diameter. The open end of the bush is closed by a screwed fitting (7). The spindle (5) moves a plug component (4) along the bush and through the opening. The spindle moves the plug and also fixes its position.</p> |
