| 摘要 |
<p>This invention pertains to a fluid operated valve whereby the valve open or closed status is controlled by the fluid flowing in the valve. The valve geometry is such that it makes use of the fluid and the prevailing fluid flow characteristics to assert control over the period of the opening and closing events and subsequent mass discharge through the valve during these events. Valve geometry is used also to reduce the relative velocity between the valve body and the moving element as the moving element approaches the fully open or fully closed position.</p> |
