Modulating gas valves and systems
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United States of America Patent
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Apr 28, 2009
Grant Date -
Sep 27, 2007
app pub date -
Mar 22, 2006
filing date -
Mar 22, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
Modulating gas valves and systems for modulating gas flow to gas-fired appliances are disclosed. An illustrative modulating gas valve can include at least one main valve adapted to regulate the flow of gas through a main gas conduit, at least one regulator for regulating the gas pressure outputted by each main valve between a first gas pressure and a second gas pressure, and a modulator adapted to variably modulate the gas outputted by the gas valve at a pressure between the first and second gas pressures. The modulator can be used to modulate the main gas valve or valves between an infinite or discrete number of positions.
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