Title:
DIAPHRAGM VALVE
Document Type and Number:
WIPO Patent Application WO/2017/141780
Kind Code:
A1
Abstract:
The present invention expands, to higher pressures, the range of pressures that a diaphragm valve can control. The diaphragm valve is provided with: a first valve housing (200) in which a first contact surface (213) is formed, the surface being formed at a location that surrounds an opening (211); a diaphragm valve body (110) in which are formed a second contact surface (113) that faces the first contact surface and a sealing section (117) formed at a location that surrounds the second contact surface; and a second valve housing (300). An elastic connecting section (114) of the diaphragm valve body has a recessed curved surface (115) that forms a recess on the second valve housing-side and a first protruding curved surface (116) that forms a protrusion on the first valve housing-side. The second valve housing has a support section with a second protruding curved surface (315) that forms a protrusion on the elastic connecting section (114)-side at a location that faces the recessed curved surface (115).
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Inventors:
NABEI TATSUSHI (JP)
NAKAMURA YUKIE (JP)
TAKANO SAYUMI (JP)
NAKAMURA YUKIE (JP)
TAKANO SAYUMI (JP)
Application Number:
PCT/JP2017/004513
Publication Date:
August 24, 2017
Filing Date:
February 08, 2017
Export Citation:
Assignee:
CKD CORP (JP)
International Classes:
F16K7/16; F16K7/12; F16K7/17
Foreign References:
| US5112027A | 1992-05-12 | |||
| US20140238497A1 | 2014-08-28 |
Attorney, Agent or Firm:
FUJIOKA, Takahiro (JP)
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