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

Popular
Dewatering, Bypass & Sewage
Piston Pumps NEW
Water Quality Monitoring

 

 

Pump Types
Auto Prime
Air-operated
Concrete Washdown
Dredge Pumps - Dewatering
Dredge Pumps - Sludge & Slurry
Dredges
Flexi, Trash & Diaphragm
High Head Pumps
Handy-sized Pumps
Lamella Settling Tanks
Peristaltic 
pH Correction
Piston Pumps
PTO (auto prime)

Agri Pumps

Centrifugal
Primary Sludge
Progressive Cavity
Shore-mounted
Stirrers
Submersibles


Proportional Dosing
Settling Tanks & Bag
Submersibles - Drainage
Submersibles - Slurry & Sludge
Stirrers - WWTP
Trash, Flexi & Diaphragm
Water Quality Monitoring
Wellpointing

Stormwater

Flood Response
Pump Stations

Industrial

Chemicals
Food Processing
Fuels & Oils
Hot Oil
Hot Water
Hygienic
Marine
Solids Handling Pumps
Vacuum & Blowing
Viscous Fluids Pumps
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
    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
    Find Datasheets
    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

    Read Dewatering, Bypass & Sewage articles

    Download the Civil, Quarrying & Mining Product Guide 2026

    DOWNLOAD

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    Dewatering dredge Pumps

    Heavy duty pumps for when dewatering gets dirty.

    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

    Email
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    Brent Petrie

    Brent Petrie
    Sales Engineer

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    Phone
    Charlie Petrie

    Charlie Petrie
     Sales Manager

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    Phone
    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. 

    Is an auto-prime pump the same as a “dry prime” or dry-prime dewatering pump?

    On a lot of drawings and pump schedules, dry-prime pump or dry-prime dewatering pump is used as shorthand for a surface pump that can handle air and doesn’t need manual priming. In practice, the auto-prime units that Prime Fluid supplies are vacuum-assisted pumps with a dedicated priming system, so they meet the intent of most “dry prime” specs while giving you a modern, quieter and more efficient package.
    When would I use auto-prime dewatering pumps instead of a self-priming dewatering pump or submersible?

    Auto-prime units are usually the better option when the pump has to sit above the water, suction conditions might change, or you expect a lot of air to enter the line during setup and operation. A self-priming dewatering pump or submersible can still be the right choice on simpler, more static jobs, and Prime can talk you through which option will be more reliable and cost-effective for your site.
    Do you supply diesel dewatering pumps and can they be automated?

    Yes – Prime can supply auto-prime packages as diesel dewatering pump sets or electric sets, depending on what power you have available and how the system will run. With the right control panel and level sensors, those same units can be configured as an automated pump or “auto water pump” that starts and stops itself, which is helpful on remote or 24/7 sites where you don’t want someone constantly watching the pump.
    Can Auto-prime Pumps be used for flood control and emergency response?

    Auto-prime units are a good fit for temporary flood control pumps because they can be moved quickly, cope with long suction and discharge lines, and re-prime themselves as water levels change. Prime Fluid can set up high-flow Auto-prime Pump solutions for New Zealand councils and contractors that form part of a wider flood or stormwater contingency plan.
    What information do you need to size the right Auto-Prime Pump in New Zealand?

    To match an Auto-Prime Pump New Zealand job, one of our  sales engineers will usually ask for your required flow, total dynamic head, suction depth, discharge route, expected solids size and how long the pump needs to run. If your documents mention terms like autoprime dewatering pumps, auto vacuum pump or use a generic “dry prime” note, sending those details through with a simple sketch of the setup helps the team recommend the most suitable package for your project.