What adjustment controls paint flow from a spray gun?

What adjustment controls paint flow from a spray gun?

• A. Fluid control knob
• B. Air pressure gauge
• C. Pattern control knob
• D. Trigger

Answer: (A)

Paint flow from a spray gun is controlled by the fluid control knob. This knob adjusts the opening of the fluid needle inside the nozzle, which sets how much paint can pass through. Turning it toward more flow opens the passage and increases the amount of paint released; turning it toward less flow narrows the passage and reduces the paint output. The air pressure gauge is about how much air is available to atomize the paint, not how much paint comes out. The pattern control knob changes the spray shape or fan width, not the volume. The trigger starts the spray, influencing when the gun releases air and fluid, but the baseline paint flow is set by the fluid control knob. Always test on a scrap panel to dial in the right flow for your material and distance.