| 摘要 |
PURPOSE:To improve no leakage effect by providing two valve bodies on both sides of a valve shaft and further providing a leakage fluid accumulating space between said valve bodies and also a fluid discharge port in the lower part of said space. CONSTITUTION:Valve bodies 2,3 and valve seats 5,6 for said bodies are provided on both sides of a valve shaft 4. A space 7 enclosed by the valve bodies 2,3 and a valve box 1 is utilized as a leakage fluid accumulating space from whose discharge ports 8, 9 fluid 13 leaking into said space is discharged outward through a discharge pipe 10. |
