Differential pressure valve with reduced spring-surge and method for reducing spring surge
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United States of America Patent
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Jan 23, 2018
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app pub date -
Jul 19, 2012
filing date -
Jul 19, 2011
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Abstract
Disclosed is a differential pressure valve comprising: a valve body, the valve body having at least one flow inlet and one flow outlet: at least one shutter, the shutter being movable between an open position and a closed position under a differential pressure across the valve; at least one flow passage from the flow inlet to the flow outlet; at least one biasing member configured to bias the shutter towards a closed position so as to block the flow passage through the flow inlet. The biasing member is a non-linear biasing member.
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