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A gate valve capable 2012-01-19
An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high dur
A transfer chamber-side valve 2012-01-18
A gate valve has a transfer chamber-side valve element and a process chamber-side valve element connected to a single shaft actuated with a single three-position air cylinder to selectively close a pr
A gate valve 2012-01-17
A gate valve for use with a catheter including an elongated valve body having a transversely extending slide chamber and a slide member slidably supported in the slide chamber for transverse sliding m
Normally gate valves 2012-01-16
Gate valves have been well known and used for a number of years employing a variety of constructions. Such valves normally include a valve body with a flow passage therethrough, spaced annular seating
A double-sided valve 2012-01-13
A patent document 1 (U.S. Pat. No. 6,390,448) discloses a gate valve wherein mutually opposing walls of the gate valve body are formed with a PC (process chamber) opening and a TC (transfer chamber) o
A packingless gate valve 2012-01-12
A packingless gate valve is disclosed which includes a housing having opposed similar housing halves with resilient sleeve units which compressibly engage each other in the valve open condition and en
A coated gate for a gate valve 2012-01-11
A method of forming a coated gate for a gate valve, the gate incorporating a coupling member which is located with a clearance fit in an undercut groove in the gate and which is formed with a screw-th
A packingless gate valve 2012-01-10
A packingless gate valve is disclosed which includes a housing having opposed similar housing halves with resilient sleeve units which compressibly engage each other in the valve open condition and en
