| 摘要 |
A check valve device includes a valve section of a valve plug arranged in a fluid passage of a body, the valve plug being in a valve-opened state when separated from a seat section, and the valve plug being in a valve-closed state when seated on the seat section, and an elastic member which urges the valve section by the spring property of bent spring sections so that the valve section is seated on the seat section. The body, the valve plug, and the elastic member are formed of resin materials.
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