ABF series automatic self-cleaning filter is a motor drive filter. It is installed a stainless steel brush in the filter screen, the brush is rotated by the motor, and an electromagnetic diaphragm drain valve is installed on the end cover of the filter. When the filter needs be cleaned, the signal from the time and pressure difference switch on the electronic control box is transmitted to the control panel. The control panel opens the drain valve and starts the motor at the same time, drives the brush to rotate and brush off the dirt impurity. Cleaning without breaking the flow.