Vacuum relief valve and method for assembling the same
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United States of America Patent
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Jan 8, 2013
Grant Date -
Mar 31, 2011
app pub date -
Sep 29, 2009
filing date -
Sep 29, 2009
priority date (Note) -
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Abstract
A vacuum relief valve is provided. The vacuum relief valve includes a body having a side wall, and a stem that is movable with respect to the body between an open position and a closed position. The stem is biased in the closed position. The vacuum relief valve further includes a first sight glass coupled to the body and configured to enable visual inspection of a sealing area of the vacuum relief valve. The sealing area includes at least a portion of said stem.
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