Title:
高性能流体制御弁
Document Type and Number:
Japanese Patent JP2004526111
Kind Code:
A
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.
Inventors:
Bowman, Hans Dee.
Application Number:
JP2002587835A
Publication Date:
August 26, 2004
Filing Date:
April 17, 2002
Export Citation:
Assignee:
Fisher Controls International Limited Liability Company
International Classes:
F16K39/02; F16K3/24; F16K47/08; (IPC1-7): F16K3/24
Domestic Patent References:
| JPH08270808A | 1996-10-15 | |||
| JPH0681967A | 1994-03-22 | |||
| JP2001082632A | 2001-03-30 | |||
| JPS60196065U | 1985-12-27 | |||
| JP2002522728A | 2002-07-23 | |||
| JPH04316772A | 1992-11-09 | |||
| JPS52126530A | 1977-10-24 | |||
| JPS6034165U | 1985-03-08 | |||
| JPS5415623U | 1979-02-01 | |||
| JP2000314484A | 2000-11-14 | |||
| JPS617672U | 1986-01-17 |
Foreign References:
| WO2000009917A2 | 2000-02-24 |
Attorney, Agent or Firm:
Yoshihiro Tsunoda