| 摘要 |
PROBLEM TO BE SOLVED: To provide a sluice valve for vacuum valve unit, capable of being easily opened and dispensing with a fall preventing stopper. SOLUTION: The sluice valve 4 for a vacuum valve unit includes a valve element section 41 blocking a vacuum pipe line 56; a valve rod section 42 to which the valve element section 41 is attached; a vertical pipe section 43 provided in the middle of the vacuum pipe line 56; and a valve lid section 44 attached to the vertical pipe section 43 and having an insert hole 44a to which the valve rod section 42 is inserted. A female thread groove is provided on the insert hole 44a of the valve lid section 44, and a male thread groove is provided on the outer periphery of the valve rod section 42 so as to be screwed to the male thread groove over the whole length of the range to be inserted to the insert hole 44a thereof. COPYRIGHT: (C)2011,JPO&INPIT |
