F43X1.0 type anti-reverse water seal valve is our company's senior engineering and technical personnel with reference to foreign technology research and development of the latest products, F43X anti-reverse water seal valve is mainly used on dry cleaning, reservoir overflow pipeline. Usually, there is a water seal in the solid valve can prevent the odor of the sewer pipe from entering the clear water pool, and it can prevent the sewage from pouring into the clear water pool when the water level of the rain sewer pipe increases due to too rain or sewer blockage, which is a good water supply sanitation protection device.