... High flow, Low noise 2.Energy efficiency 3.Smooth operation,long service life. 4.compatitive price 1.ZYSR series roots blower applicationsZYSR series roots blower ... ,aquaculture,sewage treatment,pneumatic conveying,etc2.Three lobes roots blower major specifications Bore:50-200mm Air Capacity:0 ... Power:0.75-300kw Rotary speed:740-2130rpm3.Free charge Standard Accessories all the blower are compact unit ...