| 摘要 |
<p>A packing follower (514) for use with a valve (500) includes a body having an elongated portion(517) and a bore therethrough to receive a shaft (506). A portion (528) of the bore is tapered to exert a force on a retainer (510) that at least partially surrounds and is positioned within a groove (508) of the shaft when the shaft moves toward an opening defined by the body. Additionally, the force has a first component in a direction perpendicular to a longitudinal axis of the bore and a second component smaller than the first component in a direction parallel to the longitudinal axis of the bore.</p> |
