Submersible Drainage Pumps NZ | Electric and Hydraulic

Continuous operation, minimal maintenance

Submersible drainage pumps remove or transfer excess water from work sites - either off-site or to where it’s needed, helping maintain dry, safe, and operational conditions in civil construction, mining, and quarrying across New Zealand.

By shifting water quickly, they reduce costly downtime and keep crews on the job. Because they run submerged, drainage pumps do not need priming and are less prone to cavitation. They are suited to water with fine abrasives and light suspended solids.

We supply a range of drainage submersible pumps to suit your conditions, from rainwater in trenches and excavations to pump stations and corrosive mine environments. Our team helps you specify the setup best suited to your drainage needs, including duty point, materials, and accessories, with service and support across New Zealand.

Grindex Submersible Pumps

Ultimate durability

Grindex pumps deliver optimal efficiency, reliability, and durability. Their advanced engineering includes run-dry technology, built-in thermal protection and modular construction for fast and efficient maintenance.

Proril Submersible Pumps

Dependable

Featuring chrome steel impellers, a special polyurethane cable and other smart technical solutions, Proril drainage submersibles guarantee optimal reliability when pumping excess water.

Overview of our Drainage Submersibles

Grindex Drainage Submersibles

Rugged, lightweight, run-dry electric submersibles.

Size: 50mm - 254mm (2” – 10”)
Max flow: 350L/s
Max head: 200m
Max Solids: 12mm

Proril Drainage Submersibles Durable submersible series designed for optimal reliability.

Size: 50mm – 203mm (2” - 8”)
Max flow: 110 l/sec
Max head: 90m

Proril Cutter Sewage Submersibles Featuring a chopper plate and tungsten carbide alloy tips the Proril GoCut Cutter series handles raw sewage, shredding fibrous materials to prevent clogging.

Size: 50mm –102mm (2” – 4”)
Max flow: 22L/sec
Max head: 20m
Max solids: 37mm

Vortex Sewage Submersibles Proril GOVOX series vortex sewage submersibles transfer large solids and fibrous matter without obstruction.
They offer low impeller wear and long pump life.

Size: 50mm –102mm (2” – 4”)
Max flow: 28L/sec
Max head: 34m
Max solids: 55mm

Grindex Stainless Handling pH 2 -11 Grindex INOX stainless steel submersibles perform in the harshest of dewatering environments.
Constructed from AISI 316 stainless steel minimum.

Size: 50mm – 203mm (2” – 6”)
Max flow: 130L/sec
Max head: 200m
Max solids: 80mm

Proril Stainless Handling pH 4-10, the Proril stainless range of corrosion-resistant, durable pumps transfer clean or slightly contaminated water in demanding environments.

Size: 50mm – 76mm (2” - 3”)
Max flow: 11L/sec
Max head: 20m
Max solids: 40mm

Hydraulic Drainage Submersibles Powered by a hydraulic powerpack the BBA BA150KS_D285 SUB hydraulic submersible pump suits sewage and trash applications that require powerful submersible pumping.

Drive: diesel DriveOn®
Max flow: 435m³/hr
Max pressure: 40mwc
Max solids: 100mm

Proril Single Channel Sewage Submersibles Proril GOMAX series submersible pumps use a single-channel enclosed impeller with air-release valve for highly efficient, non-clogging sewage transfer.

Size: 76mm – 152mm (3” – 6”)
Max flow: 100L/sec
Max head: 42m
Max solids: 76mm

Accessories Prime Fluid Management holds stock of a wide range of quality fittings and dewatering accessories.

Bauer Fittings & adapters
Strainers
Fuel tanks & generators

Bosman Vision Series Fish-Friendly Pumps

The Bosman Vision Series are compact, low noise, low footprint submersible draining and irrigation pumps that perform at range, with limited impact on aquatic life and waterways.

Flow: 12 - 360m³/min
Efficiency: up to 85%
Fish mortality <2%
Water-lubricated bearings

View Range

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

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Ben Beatson
Sales Engineer

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Charlie Petrie
Sales Manager

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William Filleul
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

Agri Pumps

Stormwater

Industrial

Discharge Compliance

Submersible Drainage Pumps

Continuous operation, minimal maintenance

Ultimate durability

Dependable

Overview of our Drainage Submersibles

View our full dewatering, bypass and sewage pump range.

In the field

Read Dewatering, Bypass & Sewage articles

See other Dewatering, Bypass & Sewage Pumps

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

Agri Pumps

Stormwater

Industrial

Discharge Compliance

Submersible Drainage Pumps

Continuous operation, minimal maintenance

Ultimate durability

Dependable

Overview of our Drainage Submersibles

View our full dewatering, bypass and sewage pump range.

In the field

Read Dewatering, Bypass & Sewage articles

See other Dewatering, Bypass & Sewage Pumps

Wellpointing solutions

Drainage Submersibles

High Head Pumps

Handy, Trash, Diaphragm Pumps

Auto-prime Pumps

Dewatering dredge Pumps

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