Double piston trunnion mounted ball valves and methods of use

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8398053
APP PUB NO 20100276620A1
SERIAL NO

12767582

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Disclosed are a method and a ball valve structure which provide for an improved seal in a trunnion mounted, double piston ball valve, which is especially useful in applications requiring a seal against high pressures, such as in the oil, gas and chemical process industries. Higher pressures on an inlet side of the valve are used, while the valve moves toward and is maintained in a valve closed position, to create movement of a ball element of the valve so as to bias the ball element against both piston seat elements (or rings) used to create the seals. This movement of the ball element thereby effectively uses such upstream pressure to create and enhance a seal between the ball element and both piston seat elements while in the valve closed position.

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Patent Owner(s)

  • BP CORPORATION NORTH AMERICA INC.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ezekiel, Mark Magnolia, US 3 24

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