Automatic Self Cleaning Filter Back Wash Brush Filter Automatic backwash filter is widely used in the fields of metallurgy, chemical industry, petroleum, papermaking, medicine, food, mining, electric power, and urban water supply. Such as industrial condensate, washing water, wastewater, circulating water filtration, continuous casting water system, blast furnace water system in metallurgical industry, high pressure water dephosphorization system for hot rolling, etc. It is an advanced, efficient and easy-to-operate automatic filtration device.