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