A vacuum slide valve is presented in which inlet and outlet tubes are brought in and out of register. The sliding members are housed in a vacuum chamber to minimize leakage of air into the mass spectrometer. To provide suitable lubrication of the sliding members in the ambient hot vacuum, a gold film is employed.
William R. Landis, William C. Alford, Theodore D. Perrine, George M. Thomas, and Frank O. Anderson, "A Slide Valve Suitable for Coupling a Gas Chromatograph to a Mass Spectrometer," Appl. Spectrosc. 25, 44-46 (1971)
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