means for releasably sealing the inlet end of {HEAD ~ the nozzle} to {TAIL ~ the front end} of the tubular member with said openings in communication 
to
means for releasably sealing the inlet end of { HEAD ~ the nozzle } to { TAIL ~ the front end } of the tubular member with said openings in communication
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH