The Grundfos DDA is the high-end model in the SMART Digital range of diaphragm dosing pumps. It offers FlowControl technology and automatic degassing, and it is used for water treatment, chemical dosing and industrial metering where flow accuracy matters. This collection lists DDA models from the 7.5-16 up to the 200-4, with PROFIBUS and MODBUS connectivity available.
DDA, DDE or DDC: which Grundfos dosing pump?
- DDA: the high-end option, with FlowControl technology and automatic degassing, for demanding dosing jobs.
- DDE: the economy option for standard chemical dosing, with digital flow control and several communication options.
- DDC: the compact, user-friendly option for standard dosing in water treatment, pool and spa dosing and light industrial chemical feed.
How to choose a dosing pump
- Match flow and pressure first. Model numbers give maximum flow in liters per hour, then maximum pressure in bar, so a DDA 60-10 is a 60 L/h pump rated to 10 bar. Choose a size that covers your dose rate at the pressure of your injection point.
- Check the head and seal materials against the chemical you are dosing.
- Decide how the pump will be controlled, from manual setting to PROFIBUS or MODBUS connection.
For other metering options, see our diaphragm pumps, dosing pump accessories and Grundfos dosing and disinfection systems.
Grundfos DDA FAQs
What do the numbers in a Grundfos DDA model name mean?
The first number is the maximum flow in liters per hour and the second is the maximum pressure in bar. For example, a DDA 12-10 doses up to 12 L/h against up to 10 bar. Confirm the exact capacity at your operating pressure on the Grundfos data sheet.
Where can I find diaphragms, valves and service kits for a DDA?
See Grundfos spare parts and service kits. If you are not sure which part fits, contact PumpStop with the model number from the pump nameplate and we will help match it.
