| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a check valve which can remarkably reduce the generation of vibration and noise in a form that a check valve has a casing provided with a flow-in opening and a flow-out opening, an inner chamber is formed in the casing, a valve seat is provided on a flow-in side of the inner chamber, a closing body is supported freely to move in the inner chamber, motion of the closing body is regulated by a stopper, and a valve spring working in a check valve closing direction works to the closing body. <P>SOLUTION: A lateral cross section of the inner chamber 4 surrounding the closing bodies 7 and 17 is formed to be reduced toward a check valve opening direction 15. <P>COPYRIGHT: (C)2004,JPO</p> |
