How Does a Backwashing Water Filter Work? - YouTube
Automatic self cleaning backwash filter Type Filterautomat DDF - YouTube
Backwashing Filters
WECO Whole House Backwash Filter/Softener with EcoMix Advanced Softener Media and Big Blue Sediment Pre-Filter for the Reduction of Hardness, Iron, Manganese and Tannins (16" x 65" - 46,000 Grains) - -
Automatic backwash filter - Brother Filtration
US Water Backwashing Carbon Filter 1.5 Inch | 10-30 GPM
Automatic Backwash Filter System | Automatic Backwashing
Backwashing Your Sand Filter
filters backwashed with air and water simultaneously - Degremont®