Patent ID: 8534323

Claim:
A control valve, comprising: a gallery comprising a central axis; an outlet in communication with the gallery; and an inlet in communication with the gallery and comprising a longitudinal axis laterally offset from the central axis of the gallery, wherein the longitudinal axis and the central axis do not intersect, and wherein one side of the inlet extending in a direction parallel to the longitudinal axis of the inlet is tangentially aligned with a portion of an inner sidewall of the gallery; and a seat ring assembly coupled to the outlet, the seat ring assembly comprising an at least substantially cube-shaped channel extending helically therethrough, wherein the cube-shaped channel has a square-shaped lateral cross section taken in a direction perpendicular to the longitudinal axis of the gallery; and a seat ring assembly coupled to the outlet, the seat assembly comprising an at least substantially cube-shaped channel extending helically therethrough, wherein the cube-shaped channel has a square-shaped lateral cross section taken in a direction perpendicular to the longitudinal axis of the gallery.