A dosing pump is a small, positive displacement pump. It is designed to pump a very precise flow rate of a chemical or substance into either a water, steam or gas flow. A dosing pump is generally quite small and is powered by either a small electric motor or air actuator. They are controlled either by an external control system or more commonly an internal pump controller that can alter the flow rate, the on/off function and things like alarms and warnings for run dry, degassing and low production levels.
Dosing pumps have a large range of applications across a number of industries. This ranges from water treatment, agriculture, industrial, manufacturing, medical, food processing and mining. Generally dosing pumps are set up to inject a product into a water or fluid stream to cause a chemical or physical reaction.