| 摘要 |
A valve having improved inherent flow characteristics, improved noise characteristics, and improved dynamic torque characteristics is provided. Th e valve includes a disk (10) for controlling fluid flow inside a valve. The di sk (10) has a first vane (12) and a second vane (14) disposed relative to the first vane (10). In accordance with one embodiment, the second vane -814) is disposed along an axis extending from a pivot point (22) of the disk (10). I n such an embodiment, the first vane (12) is disposed offset from the second vane (14). The first vane (12) and the second vane (14) can be substantially parallel. The valve further includes an upstream indentation for dynamic torque reduction and include noise and cavitation reducing features on a downstream side of the disk (10) and/or an indentation for dynamic torque reduction in case of a fluid flow reversal.
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