This type of painting apparatus utilizes a separate container to hold the coating material. Compressed air forces the paint through a hose to the spray gun, allowing for a consistent and high-volume delivery of material. This differs from siphon or gravity feed systems, where the paint is drawn into the airstream at the gun itself. A common application is in high-production environments where large surface areas need to be coated quickly and efficiently.
The advantages of this approach lie in its ability to handle viscous materials and provide a consistent spray pattern over extended periods. This is particularly beneficial when working with industrial coatings, automotive paints, or other specialized materials that may be difficult to atomize with other spray gun designs. Historically, this method allowed for increased productivity in manufacturing settings, reducing downtime for refilling paint cups and offering better control over material usage, leading to less waste.