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