{HEAD ~ The discharged fluorocarbon vapor} is recondensed through {TAIL ~ an expansion valve} and collected for recycling 
is recondensed through
{ HEAD ~ The discharged fluorocarbon vapor } is recondensed through { TAIL ~ an expansion valve } and collected for recycling
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH