{HEAD ~ The nozzle} is removable for {TAIL ~ maintenance} by detaching the flange member and withdrawing the nozzle through the opening 
is removable for
{ HEAD ~ The nozzle } is removable for { TAIL ~ maintenance } by detaching the flange member and withdrawing the nozzle through the opening
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH