This includes thermal barrier protection from excessive heat caused by steam and prevents any material from solidifying on {TAIL ~ the external surface} of {HEAD ~ the inner nozzle} 
This includes thermal barrier protection from excessive heat caused by steam and prevents any material from solidifying on { TAIL ~ the external surface } of { HEAD ~ the inner nozzle }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD