Technician A says that a spray gun must be adjusted each time it is used even though the material being sprayed is the same each time. Technician B says that an air cap pressure gauge reading will be the same as the pressure on the wall regulator. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct. Even if the material being sprayed is the same, the application may require different spray patterns or viscosity, which will require the spray gun to be adjusted each time it is used.

Technician B is incorrect. Air cap pressure gauge reading may different from the pressure on the wall regulator due to pressure drop in the hose or other factors. Therefore, the pressure gauge should be used to adjust the pressure at the gun.

Technician a Says That a Spray Gun Must Be Adjusted