Ball valve with shear bushing and integral bracket for stem...

Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed

Reexamination Certificate

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Details

C251S315010

Reexamination Certificate

active

07093819

ABSTRACT:
A valve100comprising a one piece valve body112having an axial fluid bore124and a rotatable fluid control element110. The body112includes an integral bracket128which provides an open access area between the bracket128and the main body112of the valve100. A valve stem130is disposed within a stem bore135, and137extending from the valve body112to the bracket128, and engaging the flow control element110. A contiguous single piece gland flange142secures packing134disposed between a valve body bore137and the stem130. The stem130includes an enlarged shoulder152which engages a contiguous single piece shear bushing148having a diameter greater than the diameter of the stem bore130, thereby preventing removal and/or blowout of the stem130without prior removal of the shear bushing148.

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patent: 6095493 (2000-08-01), Velan
patent: 6629683 (2003-10-01), Wang

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