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