Grundfos Diaphragm Dosing Pumps

Grundfos diaphragm dosing pumps are precision devices designed to accurately inject chemicals or other fluids into a system. They are recognized for their accuracy, reliability, and cost-effectiveness, making them suitable for a variety of applications such as water treatment, chemical metering, and industrial processes.

Grundfos offers dosing pumps in both digital and mechanical designs. The digital dosing pumps are smart solutions tailored for complex dosing in less aggressive environments. They provide a high level of accuracy, which not only reduces chemical waste but also lowers energy costs. In contrast, Grundfos mechanical dosing pumps are known for their extreme durability, making them ideal for applications that require reliable dosing, high-pressure capabilities and minimal maintenance.

Design Advantages

  • Precise and easy setting
  • Unique dosing technology
  • Compact design saves money and space
  • Accessories enhance the operation of the entire system
  • Smooth and low-pulsation dosing
  • Carefully selected materials for reliability and longevity

Available Options

We customise pumps according to your specific application. Get in touch with us today to get a complete list of your options.
  • Materials options
  • Control options
  • Connection options
  • Accessories and spare parts
  • Baseplate/mounting

Key Specifications

Digital Dosing Pumps

  • Max flow: 940 l/h
  • Max head: 16 bar
  • Max pressure: 16 bar
  • Liquid temperature: -10 - 50 °C

Mechanical Dosing Pumps

  • Max flow: 2300 l/h
  • Max head: 200 bar
  • Max pressure: 200 bar
  • Liquid temperature: -10 - 90 °C

Applications

  • Drinking water treatment
  • Wastewater treatment
  • Cooling water treatment
  • Washing systems
  • Process water treatment
  • Chemical industry
  • Caustic Dosing
  • Sulphuric acid dosing
  • pH correction
  • Chemical dosing
  • Desalination
  • Industrial wastewater and water supply
  • Industrial Heating
Talk to our experts
Grundfos Diaphragm Product groupGrundfos is deemed the largest pump manufacturer in the world with more than 19,000 employees globally and an annual production of over 16 million pump units.

OUR RANGE OF AVAILABLE Grundfos DIGITAL DOSING PUMPS

Grundfos digital dosing pumps are variable-speed pumps designed for precise and controlled chemical dosing in industrial and water treatment applications. They are known for their high accuracy, low pulsation, and exceptional efficiency and reliability.

Benefits:

  • Variable-speed stepper motor for precise control and accurate dosing.
  • Microprocessor control and intelligent drive that ensure low pulsation and precise dosing.
  • Maintenance-free FlowControl system that detects malfunctions due to air bubbles.
  • EC motor technology for reduced energy consumption.
  • High accuracy for various types of media.
  • User-friendly interface with easy calibration and intuitive menus.
  • Modular design for custom solutions and straightforward integration.
  • Built for long-term performance and durability.  
Grundfos Digital Dosing Pump - DDC

DDC

Max flow: 15 l/h
Max head: 10 bar
Max pressure: 100 bar

Grundfos Digital Dosing Pump - DDE

DDE

Max flow: 200 l/h
Max head: 10 bar
Max pressure: 10 bar

Grundfos Digital Dosing Pump - DDA

DDA

Max flow: 200 l/h
Max head: 16 bar
Max pressure: 16 bar

Grundfos Digital Dosing Pump - DME

DME

Max flow: 940 l/h
Max head: 10 bar
Max pressure: 10 bar

OUR RANGE OF AVAILABLE Grundfos Mechanical DOSING PUMPS

Grundfos mechanical dosing pumps are a positive displacement pump with an external motor drive, designed for precise and controlled dosing of liquids into a larger process stream. These pumps are recognised for delivering smooth, low-pulsation dosing, durability, and minimal maintenance requirements.   

Benefits:

  • Provides smooth, low-pulsation dosing, which is crucial for maintaining process stability and accuracy.
  • Robust design with high-quality motors to ensure durability and reliability.
  • Requires minimal maintenance, which reduces downtime and maintenance costs.
  • Many models include a diaphragm protection system to prevent leaks and damage.
  • Some models, particularly from the DMX range, offer a variety of dosing head sizes, materials, and accessories for flexibility in application.
  • Designed for compatibility with existing systems, making them easy to integrate and operate.  
Grundfos Diaphragm dosing pump

DMH

Max flow: 2300 l/h
Max head: 200 bar
Max pressure: 200 bar

Grundfos Diaphragm dosing pump

DMX

Max flow: 1120 l/h
Max head: 12 bar
Max pressure: 12 bar

PRINCIPLE OF OPERATION

Grundfos dosing pumps can be controlled either mechanically or digitally, providing a range of options for various applications. Both types use a flexible diaphragm driven by a motor to precisely dose fluids.

In the mechanical models, the pump head is connected to a motor, often through a worm gearbox that converts the motor's rotational motion into cam movement. This cam movement drives a piston that compresses the diaphragm within the pump head. When the piston pushes down, the diaphragm flexes and expels fluid through an outlet valve. The dosing capacity of the pump is controlled by adjusting both the stroke length and the stroke rate.

On the other hand, Grundfos digital dosing pumps utilise variable-speed stepper motors for more precise and continuous dosing. These pumps feature internal stroke speed control, allowing for smooth and continuous dosing without the need to adjust the stroke length. This design enhances accuracy and ensures consistent dosing, even when dealing with fluids of varying viscosity or degassing media.

Grundfos offers a variety of control options, including Flow Control Measurement (FCM), Flow Control (FC), Analogue Relay (AR), and more, allowing for flexible control tailored to different needs.

Servicing you anywhere in Australia

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