Stem anti-rotation device for nuclear reactor power plant gate valves and maintenance method using the stem anti-rotation device

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11280412
APP PUB NO 20200300373A1
SERIAL NO

16741439

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Abstract

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An anti-rotation device for preventing separation of a valve stem and valve disc(s) in a gate valve in a nuclear reactor power plant of the type where connection means, such as a wedge or disc hub, is threadedly engaged by the valve stem to actuate the valve and a method for maintenance or repair of the valve without disassembly of the valve or removal of the valve actuator.

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Patent Owner(s)

Patent OwnerAddress
MPR ASSOCIATES INCALEXANDRIA VIRGINIA 22314-3238

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Butler, Patrick Alexandria, US 1 0
Knittle, Paul Alexandria, US 1 0

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