Flow control device

Claim 1

A flow controller comprising: a disk-shaped body including an axial bore, said disk body includes a pair of major faces, one of said major faces being inwardly tapered toward said axial bore, said taper is at an angle of from about 21° to about 25° with respect to a plane transverse to said axial bore; means adapted for positioning said disk-shaped body a desired distance from a wall such that in a first position in a fluid flow, fluid would be enabled to pass through said axial bore and around said disk-shaped body, in a second position fluid would be enabled to pass through only said axial bore, said positioning means including a plurality of leg members projecting from the other major face of disk-shaped body at spaced locations such that said legs project axially and radially from said disk-shaped body, said positioning means coupled with said disk body; and lip flange adapted for controlling fluid flow through said axial bore of said disk-shaped body comprising an annular member, said lip flange positioned peripheral about an end of said axial bore wherein a side of the lip flange is continuous with interior side of said disk-shaped body defining said axial bore and an opposing side of said annular member being at an angle of from about 26° to about 31° with respect to said continuous side of said annular member.