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PHONE HOTLINE:
0800 482 747
E-MAIL:
info@primefluid.co.nz
Contact
PHONE HOTLINE:
0800 482 747
E-MAIL:
info@primefluid.co.nz
Contact

Solutions
Agricultural Effluent
Dewatering, Bypass & Sewage
Industrial
Sludge & Slurry
Stormwater / Flooding
Wastewater Treatment
Water Treatment

 

 

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Sludge & Slurry Dredge Pumps

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Wastewater

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Discharge Compliance

Comprehensive water treatment and monitoring solutions

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0800 482 747

Dredge pumps

Improve maintenance and extraction efficiency with Dragflow dredge pumps.

Better for your bottom line.

Getting your sludge and slurry flowing smoothly has significant financial upsides. The Prime Fluid Management team has been improving pond maintenance and extraction efficiency for customers for more than 20 years. Dragflow dredge pumps and mini dredges are a key part of our solutions. Their innovation in portable dredge technology makes them a natural fit for New Zealand’s challenging and often remote site environments. Dragflow offers highly customisable, precision dredging solutions designed to minimise environmental impact, deliver superior wear and significant energy efficiency. The net result is faster, safer, more cost-effective maintenance or extraction.
DURABILITY

Built for extreme environments

Dragflow dredge pumps and mini dredges deal efficiently to large volumes of sediment-laden water. They are well-suited to reclamation and coastal protection work, and pond and channel cleaning.

Key features include:

  • High efficiency agitator, reversible and high chrome for long life and continuous flow lifting of deposited sediments.
  • Low rotation speed: reduced wear and long-term efficiency.
  • Rugged and heavy-duty construction: highly resistant components for loaded and abrasive mixes.
Built for extreme environments
ECONOMY

The cost of poor performance

Efficient slurry and sludge management solutions will significantly improve your bottom line, with ‘hidden’ savings helping the systems to pay for themselves:

  • Reduced power consumption
  • Fewer breakdowns, lower maintenance requirement
  • Less staff and equipment required to deliver the same or better solution
  • Improved monitoring and reporting
The cost of poor performance

Overview of our Dredge Pumps

Mini Dredges

Maximise versatility and effectiveness with Dragflow's small but mighty mini dredges.
Remote-controlled, easy to transport, easy to assemble.
View Brochure
Remote-controlled and Autonomous Dredges Maximise operator safety and minimise downtime with unmanned dredges. 
View Brochure
Cable Dredges Access difficult locations with compact dredges that can work to depths of over 200m. 
View Brochure
Amphibious Dredges Adapt to land or water with powerful and effective multi-purpose machines. 
View Brochure
Aquatic Harvesters Keep waterways clean and navigate without the use of chemicals. 
View Brochure
HIRE ME Heavy-duty Electric Dredge Pumps

These electric dredge pumps are often used for extracting material below the water table, or maintaining sludge levels. 

  • Size: 75mm – 300mm (3”-12”)
  • Max flow: 833 L/s
  • Max head: 120m
  • Max Solids: 120mm
View DataSheet
HIRE ME Hydraulic Dredge Pumps

Designed to handle heavy slurries, primarily used for sludge transfer. Capable of pumping up to 70% of solids by wieght. 

  • Size: 100mm – 355mm (4”-14”)
  • Max flow: 1,111 L/s
  • Max head: 68m
  • Max Solids: 120mm
Find Datasheets
HIRE ME Jetting Ring

Agitate compact sludge and other materials with powerful water jets.

  • Electric & hydraulic models
  • Filter & non-return valve
  • Delivery line
Side Cutters

Combined with the dredge pump’s agitator, these excavators break compacted material so that it can be drawn into the pump and discharged

  • Replacable teeth
  • Electric & hydraulic models

View our full range of dredge pumps and dredges

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GALLERY

In the field

Here are some examples of our solutions being used.

Talk to us today

Read Sludge & Slurry Articles

See other Sludge & Slurry Pumps

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Dredge Pumps

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Peristaltic Pumps

Dredges

Air-operated

They brought their mechanics, they didn't just dump it and leave….couldn't have done it without them to be honest

Mark CadwalladerCatchment Worker

This sort of unique system you set up is what sets you apart from others in the Market

Jacob Warmsley Project Manager

I had an amazing experience with Prime Pump at the Transmission Gully ... will recommend you guys anytime and anywhere.

Peter FisherDirector

You guys had our backs from the get-go and stood beside us and persevered.

DaveOps Director

We called for a different type of solution…... We were pretty happy with what's been delivered

Rob KerrProject Director

Prime supplied us with the best solution for hire and the instant availability was what we needed… We certainly will be using them in the future

Priscilla EllmersWastewater Supervisor

Make an enquiry

Let’s sort your fluid management needs 
Speak to an expert

Ricardo Holt

Ricardo Holt
 Sales Team Leader

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Brent Petrie

Brent Petrie
Sales Engineer

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Charlie Petrie

Charlie Petrie
 Sales Manager

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Questions

FAQ

At Prime Fluid Management, we understand that every fluid management challenge brings unique considerations. Here, you’ll find clear, practical answers and expert guidance to help you maximise uptime, achieve regulatory compliance, extend equipment life, and implement the most effective solution for your site. 

What is the difference between a slurry pump and a sludge pump?

A slurry pump is designed to move mixtures of liquid and solid particles where the liquid component helps the material flow. It is built with abrasion and corrosion resistant materials and a robust design to handle the wear from suspended solids.

A sludge pump is designed to handle much thicker and stickier material known as sludge which has a higher solid content. These pumps often use positive displacement or slow moving mechanisms to avoid clogging and manage dense viscous fluids.
How do sludge pumps work?
Sludge pumps move heavy viscous mixtures using either centrifugal or positive displacement methods. Centrifugal sludge pumps use a rotating impeller to generate pressure and move the sludge. Positive displacement sludge pumps, such as progressive cavity, diaphragm, or lobe pumps, trap a fixed volume of sludge and force it through the pump. This method is especially useful for very thick or high-solid-content applications.
What is the main source of sludge?
Sludge typically comes from wastewater treatment processes where water is separated from solids through sedimentation or filtration. It is a semi-solid byproduct that can contain organic matter, heavy metals, and other impurities. Sludge can also come from industrial operations such as mining or manufacturing plants, where process residues and waste streams generate similar thick, viscous materials.