An inlet conduit extends to a tangential opening formed in {HEAD ~ the inner wall member} for introducing {TAIL ~ fluid} into an interior chamber 
for introducing
An inlet conduit extends to a tangential opening formed in { HEAD ~ the inner wall member } for introducing { TAIL ~ fluid } into an interior chamber
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH