What type of pump is most likely found at a chemigation injection point?

The type of pump most likely found at a chemigation injection point is a positive displacement pump. These pumps are designed to deliver a precise volume of liquid at a consistent flow rate, which is crucial in applications like chemigation where exact chemical dosing is essential.

Positive displacement pumps operate by trapping a fixed amount of liquid and forcing (or displacing) it through the discharge pipe, making them well-suited for injecting chemicals into irrigation systems with accuracy. This ability to maintain a consistent flow under varying pressures ensures that chemicals are effectively mixed and applied uniformly throughout the irrigation system, minimizing the risk of over-application or under-application.

While other pump types, such as centrifugal pumps, might be used in irrigation applications, they tend to be more variable in flow rates depending on pressure changes. The nature of a submersible pump, which is designed to operate underwater, does not make it a practical choice for the precision required in chemigation. Diaphragm pumps can also be used for similar applications due to their ability to handle chemicals safely, but when it comes to the most typical choice for this specific task, the positive displacement pump stands out for its effectiveness in delivering precise amounts of liquid.