High and Low Temperature Shutdown Pneumatic Thermostat And Method
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United States of America
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Issued Date -
Feb 20, 2025
app pub date -
Aug 28, 2024
filing date -
Aug 28, 2024
priority date (Note) -
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Abstract
A pneumatic thermostat and method, particularly suitable for oil and gas burner systems, which incorporates a dual seat valve with valve seats on each end, and a pair appropriately sized plugs, attached via a rod which is placed through the dual seat valve. This assembly is preferably coupled to a thermal expansion sleeve and internal rod, which move the assembly back and forth. With these mechanics and peripheral features, which can include for example high and low temperature venting and a bypass system, embodiments of the present invention can maintain a target temperature and shut-down pressure in the event that a temperature drops below an operating range.
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