... operation,long service life. 4.compatitive price 1.ZYSR series roots blower applicationsZYSR series roots blower widely used in electricity,petroleum,steel industry,smelling,food ... making,aquaculture,sewage treatment,pneumatic conveying,etc2.Three lobes roots blower major specifications Bore:50-200mm Air Capacity:0.8 ... joint,non return valve.4.Contact three lobes roots type blower(manufacture)