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Title: Value for controlling flow of cryogenic fluid

A valve is provided for accurately controlling the flow of cryogenic fluids such as liquid nitrogen. The valve comprises a combination of disc and needle valves affixed to a valve stem in such a manner that the disc and needle are free to rotate about the stem, but are constrained in lateral and vertical movements. This arrangement provides accurate and precise fluid flow control and positive fluid isolation.
Inventors:
 [1]
  1. (Moore, ID)
Issue Date:
OSTI Identifier:
870751
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
Patent Number(s):
US 5586745
Contract Number:
AC11-89PN38014
Research Org:
WESTINGHOUSE ELECTRIC CORP
Country of Publication:
United States
Language:
English
Subject:
value; controlling; flow; cryogenic; fluid; valve; provided; accurately; fluids; liquid; nitrogen; comprises; combination; disc; needle; valves; affixed; manner; free; rotate; constrained; lateral; vertical; movements; arrangement; provides; accurate; precise; control; positive; isolation; valve comprises; provides accurate; arrangement provides; flow control; fluid flow; cryogenic fluid; liquid nitrogen; vertical movement; needle valve; fluid isolation; accurately control; controlling flow; /251/

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