Which component adjusts the water pressure in a fertilizer applicator system?

The pressure regulator is the component that adjusts the water pressure in a fertilizer applicator system. Its primary function is to control the pressure of the water flowing through the system, ensuring that it remains within optimal ranges for effective operation. By maintaining consistent pressure, the pressure regulator helps to ensure proper application rates of the fertilizer solution, which is crucial for accurate delivery to the plants, maximizing efficiency and minimizing waste.

In contrast, the flow meter measures the rate of flow of the liquid within the system but does not adjust pressure. The nozzle adjustment can change the size and shape of the spray pattern but also does not control pressure directly. Lastly, a calibration scale is used to verify and adjust the application rates or amounts of fertilizer being used but is not involved in controlling water pressure in the system. Thus, the role of the pressure regulator in the overall functionality of a fertilizer applicator is critical for maintaining effective and accurate application.