| 摘要 |
PURPOSE: A check valve is provided to improve sealability of the valve by using a sealing member and to prevent a valve body from horizontally shaking. CONSTITUTION: A check valve comprises a housing, a valve body(3), elastic units(5), a ring-shaped elastic sealing member. A flow passage is formed in the housing. The valve body is formed inside the housing and is moved along a flowing direction of liquid. The elastic units elastically support the valve body in a closing direction of the valve and have flow passage openings(41). When the valve is closed, the valve body is inserted into the flow passage openings.
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