... pump 3.energy conserving 4.long life Ring Blower,Air PumpFLS Blower Feature: Motor reached Urope EFF2 Class,Durable High ... temperature resistant 180 CE Marking Insulation,IP55,Class HRegenerative blower is fluid machinery that is widely used and applied ... . It is often known as ring blower, vortex blower, and regenerative type turbo-machinery. The blower has its various appearances, configurations, and ...