In {HEAD ~ a method} of cleaning {TAIL ~ a paint application system} when switching between two different types or colors of paint, at least a predominant portion of the first paint remaining in a paint line is caused to flow back into its paint supply container  
In { HEAD ~ a method } of cleaning { TAIL ~ a paint application system } when switching between two different types or colors of paint , at least a predominant portion of the first paint remaining in a paint line is caused to flow back into its paint supply container
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH