What adjustment controls spray pattern width?

• A. Nozzle selector
• B. Fluid control knob
• C. Trigger
• D. Fan control knob

Answer: (D)

The ability to change how wide the spray spreads comes from the fan control knob. This control adjusts the air flow around the nozzle, which changes the diameter of the paint fan as it exits. Turning it toward a wider setting pushes the paint out in a broader spray for covering large areas, while backing it off narrows the fan for detail work or tight edges. The other controls don’t set the width directly: the fluid control knob changes how much paint is released (volume), the trigger starts the spray (and can affect technique), and the nozzle selector changes the tip configuration or size (which can influence pattern shape and flow but isn’t the direct width adjustment). So the fan control knob is the knob you use to adjust spray pattern width.