Valve for a contact tray
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United States of America Patent
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Jun 2, 2009
Grant Date -
Jan 24, 2008
app pub date -
Jul 18, 2006
filing date -
Jul 18, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
The valve for a contract tray employs an aperture in a deck that is of rectangular or trapezoidal shape with upstanding walls at the sides of the aperture. The valve body is disposed in the aperture with a cover above the aperture and legs that extend downwardly to interfit with at least the upstream end of the walls to block the liquid flow. The valve body may be fixed or movable. In the movable embodiment, the valve body is seated on the walls about the aperture to close the aperture. The ascending vapor lifts the valve to allow bubbling of the vapor in the liquid on the deck.
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