... voice,long service life 3.with a drainage pipe vacuum pump , Industrial vacuum cleaner MS220 Description:1.Industrial-type vacuum suction ... , light, economocal, durable,etc;2.Three-phase industrial vacuum bypass pump, low noise, long service life;two filtration systems; can be ... Voltage 220V,50/60hz Power 2.2KW Vacum suction 22Kpa Air flow rate 306m3/h Weight 89 Kg Noise 72db Capacity ...