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Dosing Pumps & Chemical Dosing Solutions

Tricel supplies Grundfos dosing pumps for accurate chemical addition across water treatment, wastewater, industrial process water and other dosing applications. From digital dosing pumps to mechanical diaphragm pumps, we can help identify the right solution for your required flow, pressure, chemical and control requirements.

Grundfos Dosing Pump Range

Grundfos offers dosing pump technologies for applications ranging from simple chemical addition to advanced process control. Explore the main dosing pump ranges available from Tricel.

DIGITAL DOSING

DDA

Advanced Digital Dosing

TECHNOLOGY
SMART Digital diaphragm

CONTROL
Manual, pulse, analogue, batch, timer, fieldbus

MAX. FLOW
30 l/h (S) · 200 l/h (XL)

BEST FOR
Precise, monitored processes

For demanding duties where accuracy, process reliability and advanced control matter. FC and FCM versions add flow monitoring and fault diagnosis. The latest generation, DDA-C, connects to the Grundfos GO app and has built-in fieldbus communication.

DDC

Flexible Digital Dosing

TECHNOLOGY
SMART Digital diaphragm

CONTROL
Manual, pulse; analogue on AR versions

MAX. FLOW
15 l/h

BEST FOR
General-purpose digital dosing

Accurate digital dosing with straightforward operation for common chemical treatment duties, balancing ease of use with control flexibility.

DDE

Simple Digital Dosing

TECHNOLOGY
SMART Digital diaphragm

CONTROL
Manual, pulse

MAX. FLOW
15 l/h (S) · 200 l/h (XL)

BEST FOR
Simple dosing duties

Digital dosing for general chemical treatment duties that need only simple control, using the same variable-speed principle as the rest of SMART Digital.

DME

Higher-Capacity Digital Dosing

TECHNOLOGY
Digital diaphragm

CONTROL
Manual, pulse, analogue, batch, timer; PROFIBUS on AP versions

MAX. FLOW
375 or 940 l/h

BEST FOR
Higher-flow digital dosing

Extends digital dosing to larger flows, in two sizes: 375 l/h at 10 bar and 940 l/h at 4 bar. Variable-speed operation keeps the full stroke length at every capacity setting.

MECHANICAL & HYDRAULIC DOSING

DMX

Mechanical diaphragm

TECHNOLOGY
Mechanical diaphragm

CONTROL
Manual stroke-length adjustment

MAX. FLOW
765 l/h

BEST FOR
Mechanical and industrial duties

Extends digital dosing to larger flows, in two sizes: 375 l/h at 10 bar and 940 l/h at 4 bar. Variable-speed operation keeps the full stroke length at every capacity setting.

DMH

Hydraulic piston diaphragm

TECHNOLOGY
Hydraulic piston diaphragm

CONTROL
Stroke-length adjustment

MAX. FLOW
1,500 l/h

BEST FOR
High-pressure process dosing

Digital dosing for general chemical treatment duties that need only simple control, using the same variable-speed principle as the rest of SMART Digital.

Precision Chemical Dosing

Grundfos SMART Digital Dosing

Grundfos SMART Digital technology uses variable-speed motor control to provide smooth, consistent and accurate chemical dosing across a wide operating range. The pump always works at full stroke length, whatever capacity is set.

DDE

Straightforward dosing

DDC

Flexible control

DDA

Advanced monitoring and control

Dosing Pump Applications

Water Treatment

Accurate chemical addition for maintaining required water quality.

Wastewater Treatment

Chemical dosing for treatment processes including coagulation, flocculation and pH correction.

Disinfection

Controlled dosing of disinfectants within water-treatment processes.

pH Adjustment

Accurate addition of acids or alkalis to maintain required process conditions.

Boiler & Cooling Water

Chemical treatment for boiler-feed and cooling-water applications.

Industrial Process Water

Controlled chemical addition for manufacturing and industrial water-treatment processes.

Choosing the Right Dosing Pump

The correct dosing pump depends on the chemical being handled, the required dosing rate and how the process needs to be controlled.

Factor	What we need to know
Dosing flow	How much chemical needs to be delivered over a given period?
Discharge pressure	What system pressure must the dosing pump operate against?
Chemical	What chemical is being dosed, at what concentration and temperature?
Material compatibility	The dosing head, seals, valves and other wetted components must suit the chemical.
Control requirements	Is simple manual operation enough, or are pulse, analogue, communication or monitoring functions needed?
Application	Disinfection, pH adjustment, water treatment, industrial processing or another duty?

Comparing the Grundfos Dosing Pump Range

Use this table as a simple starting point. Final pump selection should be based on the actual process requirements.

Series	Technology	Control level	Typically specified for
DDA / DDA-C	SMART Digital diaphragm	Advanced	Precision dosing, demanding processes and process monitoring
DDC	SMART Digital diaphragm	Intermediate	Flexible general-purpose digital dosing
DDE	SMART Digital diaphragm	Simple	Straightforward dosing duties
DME	Digital diaphragm	Advanced, higher flow	Larger digital dosing requirements
DMX	Mechanical diaphragm	Conventional	Mechanical and larger industrial dosing duties
DMH	Hydraulic piston diaphragm	Conventional	High-pressure process dosing, up to 200 bar

Digital or Mechanical Dosing?

Digital Dosing

Digital dosing pumps are adjusted electronically across a broad operating range, with turndown of up to 1:3000 on the smallest DDA. They can offer monitoring and process-control functions.

Mechanical Dosing

Mechanical diaphragm pumps such as DMX are adjusted by stroke length, with a 10:1 turndown. They suit duties where advanced digital process control is not required.

frequently asked questions

What is a dosing pump?

A dosing pump delivers a controlled quantity of chemical into a water or process stream. Common applications include disinfection, pH adjustment, water treatment and industrial chemical treatment.

What is the difference between Grundfos DDA, DDC and DDE?

All three are Grundfos SMART Digital pumps. DDE offers manual and pulse control, DDC adds analogue control on AR versions, and DDA adds batch, timer, fieldbus and, on FC and FCM versions, process monitoring.

What do FC and FCM mean on a Grundfos DDA?

They are DDA control variants. FC versions include FlowControl, which monitors the dosing process and gives selective fault diagnosis. FCM versions also measure flow and monitor pressure, and include the AutoFlowAdapt function.

How do I select the correct chemical dosing pump?

Start with dosing flow and discharge pressure, which set the pump size. The chemical, its concentration and temperature then decide the materials of the wetted parts. Finally, decide how the pump will be controlled.

Can dosing pumps be used with sodium hypochlorite?

Yes, with the right pump and materials. Grundfos describes sodium hypochlorite as highly degassing and recommends the DDA FCM for it. DDA pumps have an auto-deaeration function to help prevent air-locking, and SlowMode on DDA and DDC lengthens the suction stroke for degassing liquids. The pump should still be selected for the specific chemical and operating conditions.

Grundfos Dosing Pumps in Ireland

Tricel supplies Grundfos chemical dosing pumps for water treatment, wastewater and industrial applications across Ireland.

From straightforward chemical addition to process-controlled dosing, the range includes SMART Digital DDA, DDC and DDE, larger digital DME pumps and mechanical DMX dosing pumps.

Our pump team can help identify the appropriate solution based on your chemical, flow rate, system pressure and control requirements. We also provide pump service and maintenance.

Not Sure Which Dosing Pump You Need?

Tell our pump team about your chemical, required flow, pressure and application and we can help identify the most suitable dosing solution.

Call +353 (0)64 668 8040 or email watersales@tricel.ie