Grundfos SMART Digital S DDA

Grundfos SMART Digital S DDA is the advanced model in the SMART Digital S range for applications where dosing accuracy, monitoring and operational feedback are central to process reliability. It is used in water treatment, chemical dosing and industrial processes where small deviations can influence water quality, reaction control or chemical consumption. The model is relevant for users who need precise dosing with a high level of control.The pump uses internal stroke-speed and frequency control with a stepper motor, allowing smooth continuous dosing while maintaining full stroke length. It includes a flexible control cube, mounting plate, click wheel and graphical display for practical operation. Capacity can be set directly in ml/h, l/h or gph, which helps operators work with process-relevant dosing values.SMART Digital S covers dosing applications up to 30 l/h, and the DDA model adds functions such as FlowControl, pressure monitoring and AutoFlowAdapt depending on configuration. The range is associated with dosing accuracy of +/- 1% under defined operating conditions, and SlowMode supports difficult media such as high-viscosity or degassing liquids. These functions make DDA suitable for demanding dosing lines where control data and hydraulic stability matter.By combining advanced control with diagnostic feedback, DDA can help reduce manual adjustment and make dosing faults easier to identify. This supports more stable chemical use, planned maintenance and lower risk of process disruption. AxFlow can help select the correct DDA configuration, accessories and service approach for the application.