Title:
バタフライ弁
Document Type and Number:
Japanese Patent JP2013510275
Kind Code:
A
Abstract:
A butterfly valve comprises: a body including a valve opening; and a flapper rotatably mounted about a rotation axis so as to be movable relative to the valve opening. The flapper is rotatable at least 180° about the rotation axis so that the flapper is movable to at least one fully opened position, at least one fully closed position 90° apart from the fully opened position, and a third position, either fully opened or fully closed, 180° from the other like position. In one embodiment the flapper is rotatable at least 360° about the rotation axis so that the flapper is movable to each of two opened positions 180° apart, and two closed positions 180° apart from each other and 90° and 270° apart from each of the fully opened positions. The valve can be easily calibrated and controlled, and cleaned to extend the useful service life between cleanings.
Inventors:
Kulmpotik, Robert
Lucas, Paul Dee
Yaroslov, Pisera W
Chamberlain, David Bee
Lucas, Paul Dee
Yaroslov, Pisera W
Chamberlain, David Bee
Application Number:
JP2012537894A
Publication Date:
March 21, 2013
Filing Date:
October 15, 2010
Export Citation:
Assignee:
MKS INSTRUMENTS,INCORPORATED
International Classes:
F16K1/22; F16K31/04
Domestic Patent References:
| JPH01126476A | 1989-05-18 | |||
| JPS61278667A | 1986-12-09 | |||
| JP2003314377A | 2003-11-06 | |||
| JP3017058U | 1995-10-17 | |||
| JP2007046662A | 2007-02-22 | |||
| JP2008038636A | 2008-02-21 |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Hiroyuki Tomita
Osamu Hoshino
Wataru Kitakita
Yasushi Kobayashi
Hiroyuki Tomita
Osamu Hoshino
Wataru Kitakita