DDI is a high-performance package

Developed for use in industrial and water treatment applications, the DDI is a digital dosing pump built for a high performance level. Its advanced EC motor technology keeps your energy costs at a record low and ensures extreme dosing accuracy up to 150 l/h and for media up to 2600 mPa·s. Small, quiet and easy to use, the DDI will take care of the rest once you have set the required dosing rate.

Precise cavitation-free dosing

With its two built-in slow modes (40 % and 60 %), the DDI can dose even high-viscosity media precisely without the risk of cavitation. 

Switch mode

The switch-mode power supply ensures that you can use the DDI anywhere in the world.


AF and APF versions include the FlowMonitor, which detects dosing errors and shuts the pump down if your back pressure limit is exceeded.

Fail-safe operation

For critical applications, the DDI can be delivered with a fail-safe double diaphragm, which allows the pump to keep dosing even if one diaphragm ruptures.

See how customers benefit from this product

When Grundfos is a part of the solution, you get reduced energy consumption, increased comfort and unsurpassed operational reliability. Read our customers' own stories about how they benefit from the Grundfos approach to intelligence, water and energy.

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