Patent ID: 8141843

Claim:
A valve comprising: a body including an upstream flow passage and a downstream flow passage in fluid communication with an interior cavity of the body; a throttling ball disposed within the interior cavity, the throttling ball rotatable within the interior cavity on an axis to adjust the valve from a closed position to an open position, the throttling ball including a fluid conduit extending through the throttling ball, the fluid conduit being alignable with the upstream flow passage and the downstream flow passage; and the throttling ball further comprising a ball plate disposed in a downstream transverse passage of the throttling ball that intersects the fluid conduit through the throttling ball, the ball plate including a plurality of orifices allowing fluid communication there through; and a shoe member disposed in the cavity abutting an interior surface of the cavity and detachably secured to the body, the shoe including a fluid passage there through having an inlet on an upstream side being alignable with the flow conduit of the throttling ball and an outlet being alignable with the downstream flow passage of the body, the shoe having an interior surface comprising at least a partial hemisphere with an opening therein, the interior surface of the shoe disposed adjacent to and tracking an external surface of the throttling ball.