| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a passage switching device capable of reliably supplying refill water even when it is installed in a water supply passage for a siphon bedpan.SOLUTION: A flash valve SV, which is a passage switching device, performs main washing operation of opening a main valve by opening a first auxiliary valve provided in a bypass channel, and performs refill water supply operation without opening a main valve, by opening a second auxiliary valve provided in a refill water supply channel after closing the first auxiliary valve to end the main washing operation.</p> |
