Title:
BALL VALVE
Document Type and Number:
WIPO Patent Application WO/2021/002140
Kind Code:
A1
Abstract:
A ball valve equipped with: a body 53 for housing, in a freely rotatable manner, a ball 52 in which a through-hole 52 is formed; an annular seat retainer 54 that is interposed between the body 53 and the ball 52 and is for holding a ball seat 56 that makes contact with the surface of the ball 52; and a U-ring 10 interposed between the body 53 and the seat retainer 54. The U-ring 10 comprises an annular main body 11 formed so as to have a U-shaped cross section, and an annular protruding part 13 protruding radially outward from the outer circumference of the main body 11. A tip-end side of the protruding part 13 is provided with an engaging part 14 formed so as to be thicker than a base-end side, and the base-end side of the engaging part 14 makes contact with the body 53, thereby forming a seal between the body 53 and the seat retainer 54.
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Inventors:
YAMAMOTO KENJI (JP)
OTA YOSHITOMO (JP)
INAGAKI HARUKI (JP)
OTA YOSHITOMO (JP)
INAGAKI HARUKI (JP)
Application Number:
PCT/JP2020/022077
Publication Date:
January 07, 2021
Filing Date:
June 04, 2020
Export Citation:
Assignee:
QUBLOCK TECH CO LTD (JP)
International Classes:
F16K5/06
Foreign References:
| JP2015501408A | 2015-01-15 | |||
| JP2015102132A | 2015-06-04 | |||
| JP2009041776A | 2009-02-26 | |||
| JP2007170556A | 2007-07-05 |
Attorney, Agent or Firm:
ARAWORE INTERNATIONAL IP LAW FIRM (JP)
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