AIR OPERATED DOUBLE DIAPHRAGM PUMP WITH DIFFERENTIATED CHECK VALVE SIZING
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United States of America Patent
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Issued Date -
Feb 23, 2017
app pub date -
Jun 30, 2016
filing date -
Aug 20, 2015
priority date (Note) -
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Abstract
In one example, a displacement pump has a suction side including a suction check valve, and a discharge side including a discharge check valve. The discharge side and suction side are each configured for selective fluid communication with each other, and the suction check valve defines a flow area that is relatively larger than a flow area defined by the discharge check valve.
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