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