Gravity feed spray gun is the most common type used for painting. It is a high-volume, low-pressure gun. It is designed to deposit more of the atomized material onto the surface being sprayed while reducing overspray. This spray gun also uses cup pressure to feed liquid through the spray gun. It mounts the cup on top of the spray gun head so that pull of gravity helps the material flow out of the cup. A gravity feed design helps eliminate the problem of spitting. All of the liquid will flow down into the pickup hole formed in the bottom of the cup. No pickup tube is needed.