... blower 1.high pressure roots blower 2.three lobes rotary type 3.cast iron frame Main ... /min),high efficiency,small volume,light weight,and compact structure.Air cooling structure,pressure rise 98Kpa,no ... .10. Special loading-release valve is equipped for the compact unit,which can make blower start running,and ... shock absorber,expansion bolts.Contact high pressure three lobes roots blower(manufacture)