three lobes roots blower(LZSR50-300B) 1.low noise three lobes roots blower 2.energy saving 3purify water and air and other three lobes roots blower(LZSR50-300B)1. Low noise, due to the helical suction and discharge, the blower air flow in and out according to the direction of spiral line, all these prevent the pulse noise and vibration. What's more, by using the Impedance complex muffler, the ...