Title:
DOUBLE VALVE MECHANISM
Document Type and Number:
Japanese Patent JP2017066604
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a double valve mechanism capable of stably, smoothly and vertically moving a check valve unit.SOLUTION: In a double valve mechanism 10 of the present invention, a flange part 13 (corresponding to "a valve element cover wall" on the present application invention) of a unit storage pipe 11 is opposed from above to an annular valve element 43 of a check valve unit 40, and since its flange part 13 is provided with an extension pipe 14 of becoming a state of being always received in a movable pipe 41 of the check valve unit 40, liquid of flowing in a drain pipe 90 is surely prevented from flowing to the annular valve element 43 side. Thus, foreign matter included in a drainage is prevented from depositing on the annular valve element 43 and its periphery, and the foreign matter can also be prevented from being nipped between the annular valve element 43 and the opening edge of a fixing valve port 25.SELECTED DRAWING: Figure 3
Inventors:
YAMASE KENJI
Application Number:
JP2015189478A
Publication Date:
April 06, 2017
Filing Date:
September 28, 2015
Export Citation:
Assignee:
SEIWA CO LTD
International Classes:
E03C1/288; F16K15/16; F16K24/00
Attorney, Agent or Firm:
Hiroshi Matsuura
Toshida Ikeda
Axami Kanako
Toshida Ikeda
Axami Kanako
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