... vacuum water,acud,oil,alkali 3)Dust collection of up to 99.8% Technical Specification(Vacuum Suction Machine Art ... Circulating air cooling Air flow rate 50L/SVacuum suction 210mbarLength of the cable 7mHose diameter 36mmPaking 45 ... used continuously for a ling time, can be vacuum water, acide, oil, alkali, corrosion resistance, resistance to ... industry, random attachment Wet&dry vacuum suction machine 20L