Then the entire paint line is flushed out using a flushing medium, before supplying {HEAD ~ the second paint} through {TAIL ~ the paint line} 
through
Then the entire paint line is flushed out using a flushing medium , before supplying { HEAD ~ the second paint } through { TAIL ~ the paint line }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL