A system for automotive coating applications presents a paint supply source for delivering the paint to a powder destination. A paint line fluidly interconnects the paint supply source and powder destination. A compressed fluid source is separable from the paint line is designed for selectively introducing compressed fluid into the paint line in response to the blockage of the paint line and for generating compressed pressure in the paint line to permeate compressed fluid into the blockage. A pressure relief device fluidly communicates with the paint line for reducing compressed pressure in the paint line and evacuating the blockage from the paint line.