| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a reverse-flow prevention coupling which can be used in wide filed where certain accuracy in reverse-flow prevention is required and can be treated by incineration after usage to allow application in various fields as the disposable coupling for prevention of reverse-flow. SOLUTION: A valve body case 10 connected to a suction side pipe P and a cover case 20 hermetically fitted around the valve body case 10 and connected to a discharge side pipe Q are formed to fit freely removable. A valve body 11 which is mounted freely slidable along the flow passage of the valve body case 10 and blocks the flow passage of the valve body case 10 freely closable. A controlling element 21 connected freely detachable to the valve body 11 is installed within the cover case 20. The valve body 11 is so configured as to be released from the controlling element 21 when the valve body 11 connected to the controlling element 21 moves slidably to the position where the flow passage of the valve body case 10 is blocked, in case the valve body case 10 and the cover case 20 which are in fitting condition are to be separated.</p> |
