What is the function of a metering disk?

The function of a metering disk is to create a specific orifice size in certain nozzles. This component plays a crucial role in controlling the flow rate of the spray solution as it passes through the nozzle. By determining the size of the opening, the metering disk ensures that the correct amount of herbicide or pesticide is applied per unit area, which is essential for effective pest control and minimizing environmental impact. This precision helps in achieving uniform application and allows for adjustments based on the specific requirements of the treatment area.

The other options do not accurately describe the purpose of a metering disk. Increasing viscosity is related to the formulation of the spray solution, not the function of the disk. Similarly, heating the liquid herbicide is not within the scope of what a metering disk does, as its primary role is flow regulation rather than temperature management. Lastly, while filtering out solid materials is important for maintaining the integrity of the spray system, this task is typically done by separate filtration components rather than by the metering disk.