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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

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Dewatering, Bypass & Sewage
Piston Pumps NEW
Water Quality Monitoring

 

 

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Discharge Compliance

Comprehensive water treatment and monitoring solutions

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0800 482 747

Sludge & Slurry Submersible Pumps

Optimise resource and minimise handling and movement of your sludge and slurry.

    Your pit dewatering could do better.

    Sludge and slurry submersible pumps are specialised pumps built to withstand highly abrasive fluids. They are constructed from hard metals and abrasion-resistant linings, with added features to prevent obstruction, overheating, and excessive wear.

    These pumps are ideal for moving thick, solid-laden liquids such as wastewater and sludge from ponds, tanks, or treatment facilities. Whether you're managing water transfer on a construction site, cleaning out a sediment-filled pond, or handling industrial wastewater, submersible sludge pumps offer a reliable and portable solution.

    Avalible for both hire and sale across New Zealand, these pumps are commonly used for dewatering, desludging, and transferring heavy liquids where durability and efficiency are critical. 

    SYSTEM DESIGN

    Identify your performance drains

    You know your quarry. We know our products. Together, we can identify performance drains and problem products that are hindering maximum productivity.
    At Prime Fluid Management, productivity assessments are a first step in our solutions pathway.
    Identify your performance drains
    NEW TECHNOLOGY

    Working smarter

    At Prime Fluid management we are look for technological advances in our products – design, engineering and connectivity features that will help you to: 
    • Optimise resource 
    • Minimise handling and movement
    • Improve operational safety
    • Meet discharge and environmental obligations
    • Reduce extraction costs
    Working smarter

    Overview of our Sludge & Slurry Submersible Pumps | NZ

    Grindex Sludge Pumps

    The Solid, Salvador, Senior and Sandy models, designed for continuous, unattended operation where reliability is critical and solids content is high.

    • Size: 50mm – 100mm (2” – 4”)
    • Max flow: 24L/s
    • Max head: 38mwc
    • Max solids: 80mm
    Grindex Slurry Pumps

    Constructed for maximum wear-resistance, the Grindex Bravo range handles highly abrasive liquids with a pH tolerance of 5.5 – 14. Agitators are built-in in some models.

    • Size: 100mm – 150mm (4” – 6”)
    • Max flow: 130L/s
    • Max head: 45mwc
    • Max solids: 40 mm
    Proril Sand & Slurry Pumps

    A rugged and cost-effective solution the Proril Stormy series feature high chrome impellers, agitators and wear plates to withstand tough slurry transportation.

    • Size: 75mm – 200mm (3” – 8”)
    • Max flow: 110L/s
    • Max head: 30mwc
    • Max solids: 40mm
    Heavy-duty Electric Dredge Pumps Move large volumes of abrasive materials without clogging or excessive wear. Available with advanced control panels for remote monitoring.

    • Size: 75mm – 300mm (3”-12”)
    • Max flow: 50,000 L/min
    • Max head: 120m
    • Solids: 120mm
    Hydraulic Dredge Pumps

    Suited to high head and heavy dewatering, dam or pond cleaning, extraction and coastal protection.
    Significant economy over traditional methods.

    • Size: 100mm – 350mm (4”-14”)
    • Max flow: 66,700 L/min
    • Max head: 68m
    • Solids: 120mm
    Grindex Stainless Sludge Submersibles VHandling pH 2 -10, and solids up to 10mm, Grindex INOX stainless steel submersibles handle corrosive dewatering environments.
    Constructed from AISI 316 stainless steel.
    • Size: 2” – 6”
    • Max flow: 130L/s
    • Max head: 200m
    • Solids: 80mm
    Proril Stainless Submersibles The Proril X-Smart and X-Vox ranges feature corrosion-resistant impellers with large free passage.
    Contact areas are constructed from 304 or 316 stainless steel.
    • Size: 2” (50mm)
    • Max flow: 43m3/h
    • Max head: 18mwc
    • Solids: 40mm
    View Brochure

    View our sludge and slurry pump range

    Download
    GALLERY

    In the field

    Here are some examples of our solutions being used.

    Talk to us today

    Read Dewatering, Bypass & Sewage articles

    See other Dewatering, Bypass & Sewage Pumps

    Wellpointing solutions

    High-efficiency pumps & wells engineered for NZ conditions.

    Drainage Submersibles

    Submersible drainage pumps manage water levels and prevent ...

    High Head Pumps

    Efficient high head surface mount and submersible pumpsets ...

    Handy, Trash, Diaphragm Pumps

    Hard-working drainage pumps for as-required site dewatering ...

    Auto-prime Pumps

    Simplify your bypass or dewatering set-up with ...

    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

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    Gerhard Rudolph

    Gerhard Rudolph
     Hire Account Management

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    Duncan Moore

    Duncan Moore
     Sales Engineer

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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 do drainage submersible pumps do on site?

    Drainage submersible pumps remove or transfer unwanted water from a wide range of environments — from construction and mining sites to tunnels, basements, and flood zones. Designed to operate fully submerged, they eliminate the need for priming and reduce the risk of cavitation. Their ability to handle water with suspended solids ensures reliable performance in demanding conditions.
    Can these pumps run dry?

    Yes — selected Grindex models feature advanced run-dry capability, with built-in thermal protection and a modular design that simplifies maintenance. This not only protects the pump during unexpected dry runs but also contributes to their reputation as one of the most reliable and durable drainage submersibles on the market - ideal for long-term, low-maintenance performance in demanding environments.
    What size and performance range do you cover?

    Across the ranges shown, inlets span roughly 2–10 inches with max flows listed up to about 350 L/s and heads up to 200 m on certain models. Check the overview tables or download the Dewatering, Bypass & Sewage Pumps Guide to match size, head, flow and solids to your job. 
    Do you supply and support submersibles NZ-wide?

    Yes. Prime Fluid Management operates across New Zealand with six branches, a warehouse and servicing workshop. We provide equipment, service and support nationwide. 
    What’s the difference between drainage and sewage submersibles?

    Drainage units focus on dewatering clean to lightly contaminated water and managing site water levels. Sewage units are engineered to move raw or solids-laden wastewater, with cutter, vortex or single-channel impellers to reduce clogging and pass larger solids. View our range of sludge & slurry submersibles here