At one end of the hollow shaft {HEAD ~ an impeller} is fastened which has vanes projecting into an inlet chamber and which is firmly connected via {TAIL ~ axial bridges} to a cover disc 
At one end of the hollow shaft { HEAD ~ an impeller } is fastened which has vanes projecting into an inlet chamber and which is firmly connected via { TAIL ~ axial bridges } to a cover disc
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH