Fugitive emission reducing valve arrangement
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United States of America Patent
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Jun 4, 2013
Grant Date -
Jun 24, 2010
app pub date -
Jan 14, 2010
filing date -
Jul 20, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A valve including a valve body having a bore and a spindle received in the bore, the spindle being actuatable to open and close the valve. A compression gland seal is provided about the spindle for compression between the spindle and the bore. A first seal ring is provided about the spindle at a position spaced along the spindle from the gland seal, and provides a seal between the spindle and the bore of the valve body. A second seal ring is provided about the spindle at a position spaced along the spindle from the gland seal and the first seal ring, and provides a further seal between the spindle and the bore of the valve body.
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