CDT-7500V is a powerful three phase dust extractor, with the turbine motor provide high water lift. The Bersi innovative&patent Auto Pulsing technology solve the pain of frequently stop to pulse or manually clean the filters ,allows the operator 100% uninterrupted working, labor saving greatly. Concrete dust is extremely fine and hazardous, this vacuum build with high standard 2-stage HEPA filtration system.Primary 2 large filters take turns to self clean,secondary 4 cylindrical filters are individually tested and HEPA 13 certified,ensure clean air exhaust for a cleaner, healthier working environment. It comes with a 76mm*10m grinder hose and complete floor tool kit including 50mm*7.5m hose, D50 wand, and floor tool. CDT-7500-AV is ideal for large size floor grinders, scarifiers and other surface preparation equipment.