Patent ID: 9644762
Date: 2017-05-09
CPC Classifications: B01D,F16K

Claim:
1. A valve assembly, comprising: a sleeve with an inlet and an outlet and defining a movement axis; a spool disposed within the sleeve and movable relative thereto between first and second positions along the movement axis, wherein a flow area defined by the spool between the inlet and the outlet is smaller in the spool first position than in the spool second position; and an aperture plate seated in the inlet and adjacent the spool, wherein the aperture plate defines a core flow aperture and at least one flow-directing aperture to center and straighten flow between the aperture plate and the spool, wherein the inlets of core flow aperture and the at least one flow-directing aperture are defined within a planar inlet face of the aperture plate, wherein a flow area defined by the core flow aperture is greater than a flow area defined by the at least one flow-directing aperture, wherein the at least one flow-directing aperture is angled toward the movement axis and in a taper direction defined by the core flow aperture between an inlet flow area and an outlet flow area of the core flow aperture.