FLOW PATH STRUCTURE, CHECK VALVE COMPRISING SAME, AND METHOD FOR PRODUCING CHECK VALVE

Title:

FLOW PATH STRUCTURE, CHECK VALVE COMPRISING SAME, AND METHOD FOR PRODUCING CHECK VALVE

Document Type and Number:

WIPO Patent Application WO/2020/262308

Kind Code:

A1

Abstract:

Provided are a flow path structure, a check valve comprising the same, and a method for producing a check valve in which it is possible to ensure smooth flow of a fluid while reducing cost. A check valve 1 having a flow path structure that has a hollow valve body 2 and a metal retaining ring 6, wherein an annular retaining-ring attachment groove 243 with which the retaining ring 6 closely fits is formed inside the valve body 2, the retaining ring 6 has a C shape forming part of a helical shape, and a fluid flows inside the retaining ring 6 that is closely fitted into the retaining-ring attachment groove 243.

Inventors:

YAMABE SHIMPEI (JP)
MOCHIZUKI ATSUSHI (JP)
FUKUYAMA KOHEI (JP)

Application Number:

PCT/JP2020/024428

Publication Date:

December 30, 2020

Filing Date:

June 22, 2020

Export Citation:

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Assignee:

FUJIKOKI CORP (JP)

International Classes:

B21F11/00; B21F37/02; B23P19/02; F16K15/02

Foreign References:

JPS59181377U	1984-12-04
US6206032B1	2001-03-27
JPH09133235A	1997-05-20

Other References: