{HEAD ~ Apparatus} for recovering {TAIL ~ floating hard body tube cleaning elements} from cooling water downstream of a heat exchanger 
{ HEAD ~ Apparatus } for recovering { TAIL ~ floating hard body tube cleaning elements } from cooling water downstream of a heat exchanger
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH