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