Ball valve having conically shaped stem seal
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United States of America Patent
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May 31, 2016
Grant Date -
Apr 2, 2015
app pub date -
Sep 30, 2014
filing date -
Sep 30, 2013
priority date (Note) -
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Abstract
A ball valve including a valve body that includes a first body member and a second body member. The valve body defines a valve axis and a fluid flow path. A ball element has a port and a ball stem, and is rotatable about a ball stem axis between an open position providing fluid flow through the fluid flow path and a closed position inhibiting flow through the fluid flow path. A body seal is located between the first body member and the second body member and defines a thickness that decreases as the body seal extends away from the valve axis. A stem seal defines a substantially frusto-conical shape and is arranged in the valve body. The ball stem extends through the stem seal to form a seal between the ball stem and the stem seal and between the stem seal and the valve body.
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