Dosing and metering pumps are small positive displacement pumps and are designed for metering a wide range of liquids, most especially chemicals. Basically, they inject fluid into a flow of steam, water, or gas. They provide an extremely precise flow rate for a wide range of applications from food processing to wastewater treatment, power generation, chemical processing, petrochemical, and oil and gas processes. 

There are several types of dosing and metering pumps available for different types of applications. Industries can choose from the following, depending on their system requirements: 

  • Diaphragm type constant injection 
  • Diaphragm type pulse injection 
  • Lobe pumps 
  • Peristaltic pumps 

Dosing and Metering Pump Design 

A dosing pump is a part of a bigger dosing system that consists of several components including the pump, the chemical tank, dosing line, injector, foot valve, and the control system. Dosing pumps vary in materials and size depending on the application and working fluid but generally, they come with an inlet, suction line, and dosing line.

On the other hand, a multistage borehole pump cannot accommodate high amounts of sand and is used efficiently only in delivering lower flows at high pressure unless equipped with a floating impeller design.

Dosing and Metering Pump Operation

Depending on the brand and model, a dosing pump functions in a variety of different methods. All these methods involve taking a measured amount of liquid into its chamber and then injecting the chemical into a pipe or a tank that contains the fluid that is being dosed. The pump is powered either by an air actuator or electric motor, while the control system serves as the on and off switch of the pump. The controller is also in charge of managing the flow rate of the dosing pump. 

Dosing and Metering Pump Benefits

  • Excellent precision handling capabilities over a range of flows.
  • Capacity remains uninfluenced by pressure fluctuations.
  • Ability to handle a wide range of fluid types at varying temperatures.
  • Ability to operate at high pressures in excess of 1,000bar.
  • Provides high levels of accuracy and repeatability
dosing pump


At All Pumps, we have a range of dosing and metering pumps from the best manufacturers and brands trusted by industries worldwide. Connect with one of our pump experts and we will help you find a compatible equipment for your system.

Brands we Sell, Stock & Service

GRUNDFOS is deemed the global leader in pumping technology for a reason – they always come with unrivaled and unique concepts with their pumps. In fact, for several consecutive years, Grundfos was included in the list of top pump innovators in the world. Indeed, a pioneer in everything, Grundfos boast a range of solutions for different applications.

The accurate dosing of chemicals is a crucial step in many manufacturing and production processes. This includes wastewater treatment, water purification, and industrial processing in the chemical, pharmaceutical, and food and beverage industries. With that, a proper chemical dosing equipment is required to enable businesses to reach their goals=, ensure safety, and lower operational costs.

The intelligent chemical dosing pump range of Grundfos offers the most precise metering in the field, helping industries achieve the accuracy they need. Each unit is carefully engineered and subjected under rigorous testing to meet the high standards of precision pumping. First-rate manufactured for dependable performance and maximum safety, Grundfos dosing pumps are the ideal equipment for a variety of commercial, industrial, municipal, and maritime applications.

Ready to purchase a Grundfos dosing pump? Fill up our contact form and one of our pump experts will assist you.