Which component indirectly affects the amount of spray delivered by the nozzles?

• A. Sprayer pressure regulator
• B. Sprayer nozzle
• C. Sprayer gauge
• D. Sprayer agitator

Answer: (A)

Controlling system pressure is what ultimately sets how much spray comes out of the nozzle. The sprayer pressure regulator keeps the application pressure at the target level, so it indirectly determines the spray volume by maintaining the pressure that pushes liquid through the nozzle. When pressure is higher, more liquid is forced through the same nozzle, increasing the spray rate; when pressure is lower, the rate drops. The nozzle itself defines the flow at a given pressure because of its orifice size, while the gauge simply shows current pressure and the agitator mainly mixes the contents. So the regulator is the component that indirectly affects how much spray is delivered.