| 摘要 |
PROBLEM TO BE SOLVED: To provide a gate valve for a vacuum which inhibits the occurence of particles caused by contact between metals while securely maintaining the sealed state created by a valve plate and enables easy maintenance.SOLUTION: A gate valve for vacuum 10 includes: a casing 12 having an opening 12a; a valve plate 14 which swings in the casing 12 and opens and closes the opening; and position adjustment means 18 which mechanistically inhibits the displacement of the valve plate 14 without using an elastic member when the valve plate 14 adheres to the casing 12. The valve plate 14 includes a cushioning material 34 which elastically contacts with the casing 12 when the valve plate 14 adheres to the casing 12. The cushioning material 34 is detachably fitted into an attachment groove which is formed in an arc shape at a portion of the valve plate 14 which contacts with a periphery of the opening 12a of the casing 12. |
