A Large Bakeable Vacuum Valve Page: 4 of 15
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A Large .Bakeable Vacuum Valve*
By THOMAS H. BATZER, Mechanical Engineer
Lawrence Radiation Laboratory, University of California
The development and design of a 1arge bakeable valve based on a unique
seat arrangement and a novel motion seal are described.
The.seat sealing is accomplished through the use of high pressure
fluid actuation.of an annular pinch gasket. Experimental data.on seat
closure performance, and the .specific design features to achieve suc-
cessful closures, are presented..
The bakeable motion seal utilizes a.stainless steel bellows sleev-
ing over an inner concentric actuating shaft. This shaft-is bent at 90*
to the axis of rotation and is free .to rotate relative to the bellows. There
is no apparent size limitation to this -type of actuation.
The design .of a 10-inch gate valve utilizing these principles is de-
Thiswork was done under the auspices of the U., S. Atomic Energy
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Batzer, T. H. A Large Bakeable Vacuum Valve, report, August 1, 1959; California. (digital.library.unt.edu/ark:/67531/metadc1021059/m1/4/: accessed January 21, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.