Patent ID: 8727309

Claim:
A rotary valve, comprising: a valve body and a bonnet assembly, the valve body comprising: a first aperture including a seating surface to be engaged by a seat of a fluid control member to be positioned at least partially within the valve body; a second aperture through which an end of the bonnet assembly is to at least partially extend, wherein the second aperture is sized to enable a position of the bonnet assembly to be adjusted; and a step within the valve body and adjacent the second aperture to be engaged by one or more corresponding surfaces of the bonnet assembly to at least partially align and support the fluid flow control member relative to the first aperture, wherein the bonnet assembly comprises apertures to receive fasteners to couple the valve body to the bonnet assembly, the apertures sized to enable the position of the bonnet assembly and a rotatable shaft thereof to be adjusted relative to the valve body and along a fluid flow path through the valve body and the first aperture.