JPH03117857U

JPH03117857U -

Info

Publication number: JPH03117857U
Application number: JP1990027561U
Authority: JP
Priority date: 1990-03-16
Filing date: 1990-03-16
Publication date: 1991-12-05

Description

[Brief explanation of drawings]

第１図は本考案の１実施例に係る逆止弁の縦断
面図、第２図は該逆止弁の分解斜視図、第３ａ図
、第３ｂ図は各々他の実施例の縦断面図である。１，１′……逆止弁、２，９，１０……弁体、
２１……弁部、２２……アーム部、２３……固定
部、３……スペーサ、４……カバー、４′……リ
ング、４１……開孔、５，５′……フランジ。 FIG. 1 is a longitudinal sectional view of a check valve according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of the check valve, and FIGS. 3a and 3b are longitudinal sectional views of other embodiments. It is. 1, 1'... Check valve, 2, 9, 10... Valve body,
21...Valve part, 22...Arm part, 23...Fixing part, 3...Spacer, 4...Cover, 4'...Ring, 41...Opening hole, 5, 5'...Flange.

Claims

[Claims for Utility Model Registration] An annular fixed part located on the valve seat, an arm part extending radially inward from the fixed part, and an arm part connected to the tip of the arm part and located approximately in the center of the fixed part. a thin plate-shaped valve body including a valve part capable of covering the valve seat at a peripheral edge thereof, and at least the arm part and the valve part are made of a polymer material having rubber-like elasticity; and an annular valve body located on the fixed part. a spacer, an annular pressing part that fixedly clamps the fixed part of the valve body on the valve seat via the spacer, and a ring-shaped pressing part extending radially inward from the pressing part leaving a gas passage to lift the valve part. A check valve for low pressure gas, comprising: a cover having a lift limiter that limits the lift to a certain distance; The low-pressure gas check valve according to claim 1, wherein a plurality of the arm portions extend from the fixed portion. 3. The low-pressure gas check according to claim 2, wherein a portion of the valve seat covered by the valve portion of the valve body is raised so as to be pressed against the valve portion even when gas pressure is not applied. valve. A portion of the valve body of the valve body that covers the valve seat,
3. The low-pressure gas check valve according to claim 2, wherein the fixed portion protrudes from a side surface of the valve seat so as to press the portion even when gas pressure is not applied.