Pressure build economizer valve
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United States of America Patent
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Aug 27, 2013
Grant Date -
May 12, 2011
app pub date -
Nov 9, 2010
filing date -
Nov 10, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An adjustable economizer valve is disclosed that does not overlap the pressure build function, which allows a single valve to be used for both high and low gas use applications. The valve will economize well and reduces system pressure when needed in low use applications. The valve also provides maximum pressure build capacity when needed in high gas use applications. The valve seals off the pressure build outlet from the economizer connection with a seal around a pusher post disposed in the valve body. The pusher post has an internal flow path that is sealed by a floating device that can create a seal from diaphragm pressure and can open when diaphragm pressure is removed. In exemplary, non-limiting, embodiments, the floating device can be a ball or a disc plate.
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