Ball Valves and Associated Methods
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United States of America Patent
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N/A
Issued Date -
Aug 23, 2012
app pub date -
Feb 22, 2012
filing date -
Feb 22, 2011
priority date (Note) -
Abandoned
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Abstract
Exemplary embodiments are directed to ball valves and associated methods that include a valve body, a ball disposed inside the valve body, a seat retainer, a seat, a stem and a stem bearing. The exemplary seat retainer includes an outer surface with a first outer diameter, a second outer diameter and a transition region connecting the first outer diameter and the second outer diameter in a ramped manner. The exemplary seat includes an annular groove on a seat face to provide two distinct contact points between the seat and the ball. The exemplary stem passes through a valve body opening and is in mechanical communication with the ball. The exemplary stem bearing includes a bore extending therethrough, a first inner diameter, a second inner diameter and a stem bearing transition region connecting the first inner diameter and the second inner diameter in a tapered manner.
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