Filter head also called filter cap, used in the filter water distribution systems and filter. Backwash the filter head including drainage cap, water treatment cap two are made ​​of ABS plastic, reasonable structure, reliable connection, high bearing strength of the gap the same type, with good effect, both to prevent the outflow of yin and yang resin, but also guaranteed traffic. Apply to the filter the soda backwash system and softening water treatment equipment, water quality modular, pressure, back to the program, and ion exchange filtration device.