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Title: Method and system for measuring gate valve clearances and seating force

Valve clearances and seating force, as well as other valve operational parameters, are determined by measuring valve stem rotation during opening and closing operations of a translatable gate valve. The magnitude of the stem rotation, and the relative difference between the stem rotation on opening and closing provides valuable data on the valve internals in a non-intrusive manner. 8 figs.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
187079
Assignee:
Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States) PTO; SCA: 420200; PA: EDB-96:038520; SN: 96001532309
Patent Number(s):
US 5,487,302/A/
Application Number:
PAN: 8-396,092
Contract Number:
AC05-84OR21400
Resource Relation:
Other Information: PBD: 30 Jan 1996
Research Org:
Lockheed Martin Energy Syst Inc
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; VALVES; POSITIONING; MONITORING; OPERATION; MACHINE PARTS; MEASURING METHODS; MEASURING INSTRUMENTS; DESIGN

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