ZYSR series roots blower widely used in electricity,petroleum,steel industry,smelling,food,oxygen making,spinning,etc. ... 1. Low noise, due to the helical suction and discharge, the blower air flow in and out according to the direction of ... 2130rpm ZYSR series roots blower applicationsZYSR series roots blower widely used in electricity,petroleum,steel industry,smelling,food,oxygen making,spinning,paper ...