Title:
バタフライバルブ
Document Type and Number:
Japanese Patent JP4739674
Kind Code:
B2
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.
More Like This:
| WO/1991/000450 | BUTTERFLY VALVE APPARATUS AND METHOD |
| JP6248196 | Double eccentricity valve |
| JP2596858 | [Title of Invention] Butterfly valve |
Inventors:
Bowman, Hans Di.
Application Number:
JP2003560416A
Publication Date:
August 03, 2011
Filing Date:
December 19, 2002
Export Citation:
Assignee:
Fisher Controls International Limited Liability Company
International Classes:
F16K1/22; F16K47/02; F16K47/04
Domestic Patent References:
| JP51142121A | ||||
| JP54010428A | ||||
| JP2001159475A | ||||
| JP3074530A | ||||
| JP57043062A |
Foreign References:
| DE19846728A1 | ||||
| DE2359717A1 |
Attorney, Agent or Firm:
Yoshihiro Tsunoda
Hiroaki Shimomura
Hiroaki Shimomura