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.

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

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.

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Remote-controlled and Autonomous Dredges Maximise operator safety and minimise downtime with unmanned dredges.

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Cable Dredges Access difficult locations with compact dredges that can work to depths of over 200m.

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Amphibious Dredges Adapt to land or water with powerful and effective multi-purpose machines.

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Aquatic Harvesters Keep waterways clean and navigate without the use of chemicals.

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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

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

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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

GALLERY

In the field

Here are some examples of our solutions being used.

Talk to us today

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

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

Ricardo Holt
Sales Team Leader

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Brent Petrie
Sales Engineer

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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.

Do you supply oil transfer pumps that can meet API 676 requirements?

Some positive displacement internal gear pump ranges are manufactured to API 676, with specific exceptions depending on the model. If API 676 compliance is part of your specification, we can confirm suitability during selection and provide the relevant documentation.

What’s the best oil transfer pump in NZ for diesel, fuel oil, or lubricating oil?

The best option depends on viscosity, temperature, and whether you need steady metered flow or high throughput transfer. For many industrial oils and fuels, internal gear and external gear pumps are common choices because they provide consistent flow and handle higher viscosity fluids well.

Can these pumps be specified for hazardous areas?

Yes, hazardous area options may be available depending on the selected pump and motor package. For example, some equipment ranges offer certified IECEx hazardous area rated configurations, which can be specified when the site classification requires it – including suitable options for Zone 1 and Zone 2 hazardous areas.

Do you need flooded suction, or can the pump run on suction lift and self priming?

It depends on the fluid, temperature, viscosity, and how the tank and pipework are laid out. A flooded suction setup is usually the most stable option for consistent performance, especially with higher viscosity oils, because the pump is always supplied with product.

If the pump needs to draw from a lower level or from a longer suction line, suction lift and self priming capability become important. However, the setup needs to be sized correctly to avoid issues like poor priming, air ingress, or cavitation. If you share your suction conditions and duty point, we can recommend a pump type and configuration that suits the installation.

What features help protect the pump and improve reliability on fuel and oil duties?

For fuel and oil applications, reliability often comes down to protecting the pump from pressure spikes and contamination, and selecting the right sealing arrangement. Depending on the pump type and duty, options can include an internal relief or bypass valve to protect against dead heading, and an inline suction strainer to reduce the risk of damage from debris.

Seal selection also matters for demanding services, with configurations such as double mechanical seals used on certain duties where additional containment or reliability is required. We can guide you on what features make sense based on the product, operating conditions, and site requirements.

What information do you need to specify a fuel transfer pump in NZ?

To specify the right fuel transfer pump for a New Zealand site, we typically need the fuel type, required flow rate, temperature, and viscosity, along with suction conditions such as flooded suction or suction lift.

Once we have those details, we can confirm the most suitable pump type and configuration for your application – including options for heavier fuels where viscosity is higher.

Dredge pumps

Better for your bottom line.

Built for extreme environments

The cost of poor performance

Overview of our Dredge Pumps

View our full range of dredge pumps and dredges

See other Industrial Pumps

Read Industrial Articles

In the field

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

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

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

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

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

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

Make an enquiry

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

FAQ

Find your local expert

Solutions

Resources

Company

Locations

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Equipment • Expertise • Results

Dredge pumps

Better for your bottom line.

Built for extreme environments

The cost of poor performance

Overview of our Dredge Pumps

View our full range of dredge pumps and dredges

See other Industrial Pumps

Industrial Chemical Pumps

Crest Vertical Immersion Pumps

GVR External Gear Pumps

Industrial Side Channel Pumps

Fuel and Oil Pumps for Transfer and Industrial Duties

Self-Priming Centrifugal Pumps

Hot Oil Pumps

Food Processing Pumps

Hygienic Progressive Cavity Pumps

Hot Water Pumps

Multistage Pumps

Hygienic Pumps

Marine Pumps

Solids Handling Pumps & Stirrers

Viscous Fluid Pumps

Wastewater Pumps

Industrial Vacuum & Blowing

Read Industrial Articles

In the field

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

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

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

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

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

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

Make an enquiry

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

FAQ

Find your local expert

Solutions

Resources

Company

Locations

Contact Us

Find us on

Sign up to news

Equipment • Expertise • Results

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