| 摘要 |
The present invention relates to a check valve used for a boiler of a hot water mat, which is installed on a water storage unit of a boiler of a hot water mat for supplying water to a direct water electrical heater, and for preventing the water from flowing backward from the direct water electrical heater to the water storage unit. The discharge performance of the heated hot water is improved by forming a backflow prevention blocking film on the check valve. In addition, an opening/shutting cover can be easily opened by slantly forming a wall body formed with an inflow hole of a valve main body. |
