Check valve
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United States of America Patent
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Dec 7, 1999
Grant Date -
N/A
app pub date -
Apr 15, 1999
filing date -
Apr 15, 1999
priority date (Note) -
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Abstract
A method of setting a gap between a poppet member and a seat in a check valve by sensing the position of an cylindrical projection extending from an end cap while sonically welding the end cap to a housing
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