{HEAD ~ The cleaning elements} are intercepted and directed by the slanted bar screen to {TAIL ~ a tube cleaner return line} for re injection upstream of the heat exchanger 
are directed to
{ HEAD ~ The cleaning elements } are intercepted and directed by the slanted bar screen to { TAIL ~ a tube cleaner return line } for re injection upstream of the heat exchanger
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH