Protected bellows for valve
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United States of America Patent
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-
Oct 15, 1991
Grant Date -
N/A
app pub date -
Sep 12, 1990
filing date -
Sep 12, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve apparatus comprises a valve body having a fluid passage therein including a valve seat. A valve member, having a head and stem, is movable in the body between valve open and valve closed positions determined by the proximity of its head to the valve seat. The valve member is engageable in sealing relation with a portion of the valve body between the valve seat and a valve stem packing to block fluid in the passage from contacting and leaking between the valve stem and packing. This sealing relation also serves to protect a bellows, connected between the valve member and valve body, from contact with fluid in the fluid passage.
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