Stepped butterfly valve
First Claim
1. A disk for controlling fluid flow inside a valve having an upstream side and a downstream side, the disk comprising:
- a first vane having a sealing surface; and
a second vane disposed relative to the first vane, the second vane having a fluid obstructing surface forcing fluid to flow across the second vane when in a partially open position.
2 Assignments
0 Petitions
Accused Products
Abstract
A valve having improved inherent flow characteristics, improved noise characteristics, and improved dynamic torque characteristics is provided. The valve includes a disk for controlling fluid flow inside the valve. The disk has a first vane and a second vane disposed relative to the first vane. In accordance with one embodiment, the second vane is disposed along an axis extending from a pivot point of the disk. In such an embodiment, the first vane is disposed offset from the second vane. The first vane and the second vane can be substantially parallel. The valve further includes an upstream indentation for dynamic torque reduction and can include noise and cavitation reducing features on a downstream side of the disk and/or an indentation for dynamic torque reduction in case of a fluid flow reversal.
12 Citations
26 Claims
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1. A disk for controlling fluid flow inside a valve having an upstream side and a downstream side, the disk comprising:
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a first vane having a sealing surface; and
a second vane disposed relative to the first vane, the second vane having a fluid obstructing surface forcing fluid to flow across the second vane when in a partially open position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A valve, comprising:
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a pivotable disk;
a first vane disposed on the pivotable disk and having a sealing surface; and
a second vane disposed relative to the first vane on the pivotable disk, the second vane having a fluid obstructing surface forcing fluid flow across the second vane when in a partially open position. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification