| 摘要 |
<p>The present invention relates to a flash valve including a backflow prevention opening. More specifically, a driving valve is formed on the upper end of the flash valve, and the backflow prevention opening is formed on the lower end to prevent cleaning water from flowing back through a drain. Accordingly, the flash valve does not require an additional backflow prevention opening. The flash valve according to the present invention has the backflow prevention opening already formed in the body to prevent extra installation costs and implement a neat appearance.</p> |
