In a method of cleaning {HEAD ~ a paint application system} when switching between {TAIL ~ 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 a method of cleaning { HEAD ~ a paint application system } when switching between { TAIL ~ 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 OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH 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