Technician A says that a gravity feed spray gun requires a large of pressure to lift the paint from the cup and move it into the fluid stream inside the paint gun. Technician B says that gravity largely replaces air pressure to move the paint from the cup and into the gun fluid passage. Who is correct?

Question

Quizplus · Accepted Answer

Technician B is correct. In a gravity feed spray gun, gravity is the primary force that moves the paint from the cup into the fluid stream, and air pressure is only needed to regulate the flow and atomization of the paint. The paint flows naturally from the higher position of the cup to the lower position of the gun's fluid passage, without the need for a large amount of pressure to lift it.

Technician a Says That a Gravity Feed Spray Gun Requires