Designed for Epoxy paints, urethane paints, urethane clear coats, and almost all other coatings that require a catalyst. Waterborne materials would require a review by engineering before we quote a package. Designed for two spray guns (dual circuit) typically you would use gun #1 for paint and Gun #2 for all clears. However, in large booths we would use two guns at the same time (same material). This would allow you to load up each gun independently or both guns at the same time.