Patent ID: 7832426

Claim:
A fluid control device, comprising: a valve body defining a flow path for a fluid; a hollow control member disposed in the valve body and adapted for displacement between at least a first position and a second position; and a bonnet coupled to the valve body and defining a protrusion extending into the flow path and arranged to direct at least some of the fluid flowing along the flow path when the control member is disposed between the first position and the second position, wherein the protrusion includes a continuously curved convex protrusion, the entirety of the curved convex protrusion being rigid and having a substantially parabolic cross-section, a first portion of the curved convex protrusion having a diameter that is greater than an inner diameter of the hollow control member and a second portion of the curved convex protrusion having a diameter that is less than the inner diameter of the hollow control member such that when the control member is in the second position, the control member engages the curved convex protrusion and the second portion of the curved convex protrusion is received by the control member and the first portion of the curved convex protrusion is disposed outside of the control member.