Title:
高性能流体制御弁
Document Type and Number:
Japanese Patent JP4688404
Kind Code:
B2
Abstract:
A fluid control valve includes a valve body having a fluid passageway, a cage mounted in the fluid passageway and a valve plug assembly including a valve plug. The cage has a cage bore and defines one or more windows, a valve seat located below the windows and a flow control portion of the cage bore located between the valve seat and the windows. The flow control portion has an interior contour that varies in dimension as a function of distance from the valve seat. The flow control portion provides precise control in low flow conditions. The cage may further define a sealing lip located above the windows. The valve plug assembly may include a deformable sealing ring for engaging the sealing lip when the valve plug is in a closed position. The deformable sealing ring permits valve plug travel that is substantially free of sliding seal friction.
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Inventors:
Bowman, Hans Dee.
Application Number:
JP2002587835A
Publication Date:
May 25, 2011
Filing Date:
April 17, 2002
Export Citation:
Assignee:
Fisher Controls International Limited Liability Company
International Classes:
F16K3/24; F16K39/02; F16K47/08
Domestic Patent References:
| JP4316772A | ||||
| JP6081967A | ||||
| JP2000314484A | ||||
| JP2001082632A | ||||
| JP60196065U | ||||
| JP60034165U | ||||
| JP61007672U | ||||
| JP2002522728A | ||||
| JP52126530A | ||||
| JP54015623U | ||||
| JP8270808A |
Foreign References:
| WO2000009917A1 |
Attorney, Agent or Firm:
Yoshihiro Tsunoda