AERODYNAMIC NOISE REDUCTION CAGE
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United States of America Patent
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app pub date -
Aug 10, 2017
filing date -
May 18, 2015
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Abstract
A control valve has a body having an inlet and outlet, a valve seat between the inlet and outlet, a valve plug, and a cage adjacent the valve seat to provide guidance for the valve plug. The valve plug is movable between a closed position, where the valve plug sealingly engages the valve seat, and an open position, where the valve plug is spaced away from the valve seat. The cage has a solid, unitary circumferential wall having inner and outer surfaces and a plurality of passages formed through the wall. Each passage extends between the inner and outer surfaces and follows an arcuate, non-linear path from the inner surface to the outer surface.
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