Invention Grant
US09303784B2 Minimum pressure and shutoff valve 有权
最小压力和截止阀

Minimum pressure and shutoff valve
Abstract:
An apparatus and method for controlling a pressure drop of a fluid is disclosed. A sleeve includes a plurality of flow passages in a wall of the sleeve. A member slides relative to the sleeve to reveal at least a portion of the plurality of flow passages to control flow of the fluid through the flow passages. The plurality of flow passages are at azimuthally-and axially-staggered locations around the sleeve.
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