... power 2000W 2.Noise:70dba 3.Three-phase industrial vacuum bypass pump commercial vacuum cleaner1.voltage:220V, power 2000W2.Noise: ... 70dba3.Three-phase industrial vacuum bypass pump Technical specifications: Model MS220 MS380 Voltage 220V 380V ... ,light,economical ,dirable,etc. 2.Three-phase industrial vacuum bypass pump,low noise,long service life, two filtration systems, ...