Lubricated plug valve
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United States of America Patent
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Jan 13, 2004
Grant Date -
N/A
app pub date -
Aug 16, 2002
filing date -
Aug 16, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A plug valve is provided that may be lubricated while in service. The invention provides a high-pressure valve having a valve body containing a plug allowing bi-directional flow and moveable between an open and closed flow-through position. The valve permitting lubricating and sealing while in-service and in the closed or open position. The lubricating and/or sealing mechanism includes channels formed through the plug to a lubricant groove or grooves formed on the outside surface of the plug between the ends of the fluid conduit through the plug for directing lubricant to the plug-insert or plug-valve body interface when the plug is in the closed position and lubricant to the relief area formed by the insert when the plug is in the open position.
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