Sludge & Slurry Submersible Pumps

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.

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

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

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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

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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

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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

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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

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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

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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

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GALLERY

In the field

Here are some examples of our solutions being used.

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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
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Ricardo Holt
Sales Team Leader

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Gerhard Rudolph
Hire Account Management

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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.

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.

Sludge & Slurry Submersible Pumps

Your pit dewatering could do better.

Identify your performance drains

Working smarter

Overview of our Sludge & Slurry Submersible Pumps | NZ

View our sludge and slurry pump range

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

Sludge & Slurry Submersible Pumps

Your pit dewatering could do better.

Identify your performance drains

Working smarter

Overview of our Sludge & Slurry Submersible Pumps | NZ

View our sludge and slurry pump range

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

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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