| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent cavitation damage in a valve seat formation body of an inhalational side check valve with a cheap structure.SOLUTION: Around a valve seat 32e of a valve seat formation body 32, a cannelure 32b continuing to the valve seat 32e and communicating each circulation route 33b is formed. Because water flowed from the valve seat 32e to the cannelure 32b flows to the circulation route 33b from a guide wall 33a side, water does not pile up in an area Z of a corner part of the circulation route 33b spaced from the valve seat 32e, and cavitation is not generated.</p> |
