{TAIL ~ an inner tube} projecting axially into {HEAD ~ said outer tube} in sealed relation to said first end thereof, and having a first end extending past said lateral inlet, 
{ TAIL ~ an inner tube } projecting axially into { HEAD ~ said outer tube } in sealed relation to said first end thereof , and having a first end extending past said lateral inlet ,
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH