| 摘要 |
<p>An emission control valve is claimed which is used to control emissions into the atmosphere of a medium, such as liquids, gases, and/or solids, which is being regulated and transported. The apparatus generally comprises a valve body, a valve rack, a first and second valve member disposed within the body, disc means for allowing communication between the first and second valve members, and a pinion member for cooperating with the valve rack.</p> |
