A Miniature Cryogenic High Vacuum Valve

  • J. D. Siegwarth
  • R. O. Voth
Part of the A Cryogenic Engineering Conference Publication book series (ACRE, volume 33)

Abstract

A small high vacuum valve has been built for use in a liquid hydrogen handling system. The valve stem tip consists of a polycarbonate resin which closes against a stainless steel seat. Other features of the valve include a closing mechanism that is helium gas operated and a bellows stem seal that allows the valve to open and close without changing the internal volume.

Keywords

Ethyl Helium Convolution Flange Boulder 

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References

  1. 1.
    J. F. Siebert, R. A. Hopkins, and H. A. Chameroy, S. H. Castles,“Development of a Launchworthy Motor-Operated Valve for Containment of Superfluid Helium,” Proc. 9th Int. Cry. Engr. Conf.,Kobe, Japan, 11–14 May, 1982, pp. 182–183.Google Scholar
  2. 2.
    D. N. Astrov and L. B. Belyanskii, “A High Vacuum Seal for Low Temperatures,” Instr. Exptl. Tech. USSR, 2, 506 (1966).Google Scholar

Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • J. D. Siegwarth
    • 1
  • R. O. Voth
    • 1
  1. 1.Chemical Engineering Science DivisionNational Bureau of StandardsBoulderUSA

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