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