GFK Series automatic self-cleaning filter is the high performance filter particularly designed for fine water filtration.The superior filtration rating is 15 to 300μm. Highly efficient back-flushing secures normal working even for the turbid raw water.The water flows into the screen inside from the filter inlet, passes the screen and flows out from the outlet.The particles are blocked by the screen mesh. When the filtration pressure drop rises to the preset value, the control system triggers the cleaning sequeces. The back-flushing nozzles driven by the motor moves helically and clean the inner screen surface. After all the screen area is scanned and cleaned by the suction nozzles, one back-flushing cycle is completed. During back-flushing, the filtration goes on and only very low flowrate fluctuation and outlet pressure decrease happens.