The Grundfos SMART line of digital dosing pumps perfects state-of-the-art technology with patented solutions, responding to modern developments in water treatment chemistry with intelligent dosing pumps, advanced drives, new controls, and adjustment mechanisms.

Grundfos couples advancements in technology with enhanced user-comfort, intelligent flow control, and features that provide reliable, cost-effective, and precise processes.

The powerful, variable-speed stepper motors improve upon traditional technologies such as stroke length / stroke frequency adjustment with solenoid drive or synchronous motors. And the click-stop mounting plate provides unique mounting flexibility. The entire dosing range up to 8 gph is covered by only a few pump variants to make choice and installation even easier.

The result:

  • Low operation costs
  • Longer maintenance intervals
  • High dosing accuracy
  • Saves chemicals with FlowControl
  • Saves energy with the latest drive technology
  • Lower maintenance costs thank to universal chemical resistance of the full-PTFE diaphragm and digital dosing
  • Saves natural resources with new composite materials and sustainable production processes

SMART Digital Dosing Solutions

Key Features

  • Modularity: The click-stop mounting plate allows for easy, flexible installation.
  • Simplicity: Easy to install, commission, and operate.
  • Flow Intelligence: When the FlowControl function is activated, the dosing process of the liquids is monitored by the pump, offering advanced process reliability with accuracy of 1% of setpoint.

DDA Models

  • High-end solution for complex and demanding applications
  • Flow and pressure up to 8 gph and up to 232 psi
  • Auto-deaeration during pump standby
  • Flexible Fieldbus control
  • Turn-down ratio 3000:1 with constant 100% stroke length
  • Max. 30 l/h and 16 bar
  • FlowControl with selective fault diagnosis
  • Batch modes (timer- or pulse-based)
  • Optional E-box for Profibus DP integration

DDC Models

  • The optimum solution for common applications.
  • Easy-to-use interface with click wheel to make setup and operation simple.
  • Flow and pressure up to 4 gph and up to 145 psi
  • Two SlowMode functions (25% and 50%), calibration mode, service display
  • External stop, dual-level tank control
  • Max. 15 l/h and 10 bar
  • Turn-down ratio 1:1000
  • Graphical LC display backlit in different colors
  • Standard operation modes, e.g. pulse and analog
  • 2 integrated relay outputs

DDE Models

  • Digital Dosing with basic functions even for low budget applications
  • Two (2) pump models cover the entire range
  • Flow and pressure from 0.0015 to 4 gph and up to 145 psi
  • Control options: manual control 0.1-100%, pulse in % of stroke volume
  • External stop, empty tank alarm
  • Max. 15 l/h and 10 bar
  • Turn-down ratio 1:1000
  • Smooth continuous dosing
  • Always 100 % suction stroke
  • Simple pulse operation mode


• Disinfection and pH adjustment
• Drinking water, process water and wastewater
• Food and beverage
• Clean-in-place
• Ultrafiltration and reverse osmosis
• Boiler feed water
• Cooling towers
• Coagulation, flocculation, precipitation
• Chemical industry
• Car wash
• Irrigation
• Anywhere chemical treatment and conditioning of water is required


The Grundfos DME Digital Dosing Pumps combine all the benefits of the smaller digital dosing range for use with large dosing quantities from 15.9 to 248 gph.

Key Features:

  • Ideal for water supply, wastewater, and water treatment applications – this wide dosing range offers a turndown ratio of 800:1.
  • Easy to install – Set the pump to discharge the exact quantity of dosing liquid required
  • Profibus interface – receive supply performance data and status information for quality control and preventative maintenance.
  • Dosing Head Variants – available in stainless steel, PVDF, and environmentally friendly, cost-efficient polypropylene
  • Simple display – easily navigate menus, view control features such as pulse, analog, timer, batch, calibration, anti-cavitation control, and more.
  • Anti-cavitation: Slow suction stroke speed 75%, 50%, or 25% to handle viscous fluids
  • The DME pump uses a full stroke length every time, with carefully timed speed to ensure even concentration and optimal priming throughout the entire operating range.
  • Overload protection – monitors pump counter pressure to protect against high pressure loads


• Drinking water treatment
• Water distribution
• Wastewater transport
• Wastewater treatment
• Pulp and paper
• Textile industry


The perfect combination of digital sensor technology and Grundfos’ expertise in controlling dosing and disinfection, the DID system is designed to match Grundfos’ dosing pumps, gas dosing systems, and systems for the generation and dosing of chlorine dioxide and hypochlorite.

Available as compact systems with bypass flow cell or as kits for tank-immersed sensors. Easy to set up, with pre-assembled and pre-calibrated configurations. Easy to install with Fieldbus-based communication with both controller and sensors.

Key Features:

  • Automatic setting of water flow and detection of missing water flow in systems with flow cell
  • Includes probe carrier, probe guard, and 25 foot cable for tank installation systems
  • Temperature compensation included for all sensors
  • Designed for extra-long maintenance intervals (0.5 to 1 year)
  • Pre-calibrated sensors (pH, ORP, conductivity)
  • One sensor variant per parameter for all applications and measuring ranges (pH, ORP, conductivity sensors)
  • Diaphragm-covered amperometric sensor principle (free and total chlorine, ClO2, H2O2 and PAA)
  • Lowered pH dependency for free-chlorine sensors


• Drinking water treatment
• Industrial process water and wastewater treatment (effluent disinfection): pH control for dosing acids and alkalis and control of chlorine, chlorine dioxide or ozone
• Food and beverages: disinfection in filling tanks and CIP applications
• Swimming pool water treatment: pH control for dosing acids and alkalis, monitoring and control of residual chlorine

Grundfos Skid Systems: DSS

If you need pre-engineered floor or panel dosing packages, trust the Grundfos DSS Skid System. Offering integrated controls and various pump configurations, the skid system is designed to accurately meter liquid chemicals and, at its heart, is the DSS metering pump. Hydraulically actuated and mechanically actuated pumps that feature SMART digital dosing with stepper motor technology offering up to 3000:1 flow turndown.

Custom Engineered to Order (ETO) skid systems are available for project-based work, constructed in nearly any configuration to include any Grundfos dosing pump.

Key Features:

  • Grundfos SMART Digital Dosing pumps provide precise performance and reliability in a complete solution
  • Available in one, two and three pump system configurations
  • Easy installation with plug and pump solutions
  • Fast delivery, even for customized skids, with pre-engineered systems
  • Factory tested to the highest standard
  • Flexible installation with floor and wall mount options
  • User friendly panel options include: junction, HOA, plug only, and none
  • Control cables options include: analog/pulse/stop input, relay output and analog output
  • Durable materials include PVC/CPVC pipe and EPDM/Viton gaskets
  • Available with or with pulsation dampener
  • ISO certified manufacturing options


• Sodium hypochloride
• Alum
• Potassium permanganate
• Sodium hydroxide
• Acids
• Anti-scalants

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