1 Filter holder for filter cartridges Ø 115 - 330 mm 2 Venturi nozzles for filter cartridges Ø 214 - 327 mm 3 Solenoid valve ¾", 1", 1 ½" 4 Rotary cleaning wing for filter cartridges Ø 327 mm 5 Air flow conductor for filter cartridges Ø 327 mm