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