What controls the flow of paint in an airless sprayer?

The flow of paint in an airless sprayer is controlled primarily by the orifice. The orifice is a precisely sized opening through which the paint is forced under high pressure. When paint is pumped through this opening, it atomizes as it exits, creating a fine mist suitable for painting surfaces effectively. The size of the orifice can directly affect the flow rate and the spray pattern of the paint, allowing the user to achieve the desired coverage and finish.

The nozzle is important as well, but its primary function is to shape the spray and adjust the pattern rather than control the flow directly. The valve typically regulates the overall operation of the sprayer but does not determine the flow rate to the same degree as the orifice. Filters serve to prevent clogs by catching debris but are not the focus when discussing the control of paint flow. Thus, the orifice is the key component that determines how much paint flows through the system at any given time.