Gate valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 29, 2001
Grant Date -
N/A
app pub date -
Feb 18, 2000
filing date -
Feb 18, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A gate valve wherein a valve disc is moved to a position where the valve disc is brought into contact with a valve seat and a position where the valve disc is separated from the valve seat by a driving device provided outside of a valve housing through a valve rod projected from the inside to the outside of the valve housing. The valve disc is brought into contact under pressure with the valve seat in the valve housing when the valve rod is inclined at the end of the movement of the valve rod. A cylindrical bellows is provided at the outside of the valve housing, one end of the cylindrical bellows being sealingly secured to the valve housing and the other end of the cylindrical bellows being sealingly secured to the valve rod. The valve rod is inclined centering arround a center of the axial direction of said cylindrical bellows in the compressed state thereof.
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