present invention the choke valve 10 includes a valve body 12 that is typically constructed of a strong and chemically resistant metal the body 12 defines a fluid inlet 14 and fluid outlet 16 which are set at right angles to one another thereby providing an elbow configuration for the valve body 12 the fluid outlet 16 houses at its upper end a stem and tip assembly 20 which is concentrically located within a flow cage 22 that is set within the body 12 the stem and tip assembly 20 may be moved linearly within the body 12 by a manual handwheel via an automated control or using other techniques known in the art linear movement of the stem and tip assembly 20 actuates the choke mechanism 23 of the choke valve 10 the choke mechanism 23 is used to regulate fluid flow within the valve 10 and includes a tip member 26 and surrounding flow cage 22 the lower end of the stem and tip assembly 20 is secured by autofrettage at interface 24 to a tip member 26 the tip member 26 is a substantially cylindrical piece having a central dome shaped chamber 28 the central chamber 28 is surrounded by a number of fluid flow openings within the tip member 26 the fluid flow openings are of differing sizes and are positioned in mutual opposition to one another so that openings of equal sizes are located directly across from one another for example fluid flow openings 30 are of equal sizes and are located antagonistically from one another.