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High precision high flow range control valve

United States Patent

July 13, 1999
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
A fluid control valve is described having a valve housing having first and second valve housing openings for the ingress and egress of fluid through the control valve. Disposed within a void formed by the control valve is a sleeve having at least one sleeve opening to permit the flow of fluid therethrough. A flow restricter travels within the sleeve to progressively block off the sleeve opening and thereby control flow. A fluid passageway is formed between the first valve housing opening and the outer surface of the sleeve. A second fluid passageway is formed between the inside of the sleeve and the second valve housing opening. Neither fluid passageway contains more than one turn. In the preferred embodiment only one of the two fluid passageways contains a turn. In another embodiment, the control valve housing is bifurcated by a control surface having control surface opening disposed therethrough. A flow restricter is in slidable contact with the control surface to restrict flow of fluid through the control surface openings.
McCray; John A. (Idaho Falls, ID)
Lockheed Martin Idaho Technologies Company (
08/ 804,993
February 25, 1997
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention disclosed under contract number DE-AC07-84ID12435 between the U.S. Department of Energy and Westinghouse Idaho Nuclear Company, now contract number DE-AC07-94ID13223 with Lockheed Idaho Technologies Company.