Features: 1 positive displacement blower, no compression, air conveying is smooth, there is small flow rate changes along with pressure changes. 2 tri-lobe linear-shaped impeller making inlet and outlet pulsation quiet with low noise and vibration. 3 special impeller of mesh curve and small enclosure making roots blower high efficiency, low energy consumption. 4 small size, light weight and elegant appearance. 5 with high-precision synchronous hard-toothed surface gears ensure long life. 6 much cleaner with no oil | 
