Centrifugal pump having improvements in seal life
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United States of America Patent
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-
Sep 27, 1988
Issued Date -
N/A
app pub date -
Mar 28, 1986
filing date -
Nov 13, 1984
priority date (Note) -
Expired
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Abstract
Longer shaft seal life in centrifugal pumps is realized by returning liquid from the pressure side of the pump to the seal area via a passage formed in a rib of the housing wall, and without porting the impeller, so that pump efficiency is kept high and its self-priming ability is retained.
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