Seal system, particularly suitable for process valves
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United States of America Patent
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Nov 22, 1994
Grant Date -
N/A
app pub date -
Oct 5, 1993
filing date -
Oct 9, 1992
priority date (Note) -
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Abstract
A seal system particularly suitable for a process valve, in which the intermediate chamber formed between two sliding seal gaskets arranged in series is connected to a static separator of elastic plenum chamber or bag type filled with a biodegradable, non-contaminating, non-aggressive auxiliary lubricant fluid, the internal plenum chamber or bag, which is of very high elasticity, being connected to the process fluid and cooperating with a movable head which itself cooperates with a position sensor. A modified embodiment is also described.
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