Fluid handling – Self-proportioning or correlating systems – Supply and exhaust type
Patent
1991-02-19
1992-07-21
Cohan, Alan
Fluid handling
Self-proportioning or correlating systems
Supply and exhaust type
137489, 137206, G05D 1606
Patent
active
051314240
ABSTRACT:
A precision pressure regulator not only providing makeup pressure in response to a low pressure condition, but also for providing the ability to vent off excess pressure. A system in a self-contained unit is used, thereby eliminating a need for an external power supply such as battery, electrical, or mechanical power. The precision pressure regulator also provides extremely accurate control of pressure even in the low pressure ranges of less than 1 inch of water column, and does so without the need for constant supervision by a skilled technician. A safe inert atmosphere is provided for chemical processes utilizing volatile and/or contaminant sensitive substances.
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Heidorf Christian J.
Richard, III Sam
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