Patent ID: 8167269

Claim:
A valve trim apparatus for use with valves, comprising: a cage having an upper portion removably coupled to a lower portion; a closure member disposed within the cage, the closure member having a first seating surface formed by a first portion of the closure member adjacent a first end of the closure member and a second seating surface formed by a second portion of the closure member adjacent a second end of the closure member opposite the first end, wherein the first portion is larger than the second portion, and wherein the first and second seating surfaces are integrally formed with the closure member, the closure member having a first angled surface adjacent a first end of the first seating surface and a second angled surface adjacent a second end of the first seating surface opposite the first end; and a seal assembly fixed between the upper and lower portions of the cage, the seal assembly to sealingly engage the first seating surface when the closure member is in a closed position to prevent leakage between the closure member and the cage, the first and second angled surfaces to facilitate gradual engagement of the first seating surface with the seal assembly when the closure member moves between the open and closed positions.