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Title:
PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2018/021294
Kind Code:
A1
Abstract:
Provided is a pipe joint for use in ultrahigh pressure conditions, wherein the diameter of the joint is relatively small. A pipe joint comprising first and second joint members having mutually communicating fluid passages, and a gasket interposed between abutting end surfaces of the first and second joint members, the first and second joint members having a ring-shaped seal projection formed at the abutting end surfaces thereof, wherein the joint member is characterized in that a coefficient F stipulated by equation (1) is 0.4 or less, where D1 represents the inner diameter of the first and second joint members, D2 represents the inner diameter of the gasket, D3 represents the diameter of the seal projection, and D4 represents the outer diameter of the gasket. Equation (1): F = (D3 2 - D1 2) / (D4 2 - D2 2)

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Inventors:
ISHIBASHI KEISUKE (JP)
NAKAHAMA TAKAYASU (JP)
OCHIAI TOSHINORI (JP)
YAMAJI MICHIO (JP)
YAKUSHIJIN TADAYUKI (JP)
FUNAKOSHI TAKASHI (JP)
DAIDO KUNIHIKO (JP)
MIYAGAWA HIDEYUKI (JP)
Application Number:
PCT/JP2017/026838
Publication Date:
February 01, 2018
Filing Date:
July 25, 2017
Export Citation:
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Assignee:
FUJIKIN KK (JP)
International Classes:
F16L19/03
Domestic Patent References:
WO2009131105A12009-10-29
WO2012017740A12012-02-09
WO2015130427A12015-09-03
Foreign References:
JP2003343726A2003-12-03
US20080191426A12008-08-14
EP0378493A11990-07-18
US20090258143A12009-10-15
Attorney, Agent or Firm:
MATSUMURA, Naoto et al. (JP)
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