Coaxial gas valve assemblies including electronically controlled solenoids
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United States of America Patent
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Nov 15, 2022
Grant Date -
Mar 18, 2021
app pub date -
Sep 23, 2019
filing date -
Sep 17, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A coaxial gas valve assembly includes a gas inlet, a gas outlet, a valve tube, and a shaft member. A main valve is movable between a closed position and an open position (broadly, openable and closable). A main spring is positioned to resiliently bias the main valve in its closed position. A redundant valve is movable between a closed position and an open position (broadly, openable and closable). A redundant spring is positioned to resiliently bias the redundant valve in its closed position. A solenoid coil is positioned to electromagnetically move the shaft member within the valve tube. A balance diaphragm is connected to the valve tube. A gas path through at least the valve tube allows gas flow from a first side of the balance diaphragm to a second side of the balance diaphragm to reduce a pressure difference between the first and second sides of the balance diaphragm.
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