Sleeves diameter 120 mm. Sleeves height 2000 or 3000 mm Closed cylindrical structure from steel sheet. Cleaning is ensured by intermittent air jets inside the sleeves. The automatic counterpressure for the cleaning of sleeve is realized by diaphram valves. Sleeves are connected to a series of electro pilots controlled by an electronic panel for the managing of time, pauses and cleaning cycles. The filter managing and controlling system is done by a control device with display directly accessible to the user.