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Hidrostal Pumps
Municipal wastewater pumps with flexible configuration for treatment plants and pump stations.
Engineered to Keep Flow Moving
Hidrostal pumps are designed for demanding duties in treatment plants, pump stations and sludge handling. Their original screw centrifugal impeller helps move solids-laden flow more reliably – reducing the risk of blockages in jobs where conventional pumps can struggle.
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Why Choose Hidrostal?
- Keeps Solids Moving: Screw centrifugal impeller passes solids with less risk of blockage.
- Efficient Across a Wide Duty Range: Delivers strong hydraulic performance.
- Gently Handles Fluids: Smoother pumping action makes Hidrostal well suited to sludge and other sensitive media.
- Low Maintenance Demand: Fewer blockages and less wear mean less downtime.
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Built Around Site Conditions
Hidrostal's comprehensive range includes:
- Compact Pumps: Portable for emergency response, flood work and sump clean-up.
- Immersible Pumps: Submerged or dry-installed for pump stations and treatment plants.
- Bearing Frame Pumps: Dry-installed for fixed pump stations and treatment plants.
- PreroClean: Ideal for rag-heavy stations and blockages.
- HidroMix: Multiple configurations for wet wells, sludge tanks and digesters.
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HIDROSTAL TECH
The Screw Centrifugal Impeller
Hidrostal’s original screw centrifugal impeller combines axial and centrifugal flow in a single-vane, open-channel design. It helps pass rags, fibres and solids across a wide range of wastewater jobs.
How it works:
- Open channel design for freer solids passage.
- Lower turbulence to reduce wear and clogging.
- Continuous flow path limits debris build-up.
| Applications | |
| Wastewater Treatment Plants |
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| Wastewater Pump Stations |
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Sludge & Dewatering |
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| Industrial Wastewater |
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Download the Municipal Product Guide 2026
This guide brings together pumping equipment and systems we use across municipal infrastructure, including stormwater, wastewater, and emergency response.
Overview of our Hidrostal Pumps
Portable solids-handling pumps for rapid deployment in demanding slurry and wastewater jobs.
- Discharge sizes: 50-80mm
- Max flow: 24.6L/s
- Max head: 17.7m
- Double mechanical seals
Dry or submerged pumps for wastewater jobs needing clean installs, cooling, and easy access.
- Discharge sizes: up to 700mm
- Max flow: 3,000L/s
- Max head: 90m
- Closed-loop cooling
Dry-installed pumps for plant or station use with flexible horizontal or vertical mounting options.
- Discharge sizes: 32-700mm
- Max flow: 3,000L/s
- Max head: 90m
- Horizontal or vertical mounting
Self-cleaning sump solution for wastewater stations and shafts with floating and settled solids.
- Discharge sizes: 50-200mm
- Max flow: 180L/s
- Max head: 60m
- Automatic clog detection
External tank mixing for sludge tanks and digesters, tailored with no in-tank moving parts.
- Discharge sizes: 100-300mm
- Max flow: 300L/s
- Max head: 11m
- Multiple configurations
Make an enquiry
Questions? Looking for detail? Drop us a line. We’ll get right back to you.
Hidrostal Wastewater Pump FAQs
Hidrostal pumps use the original screw centrifugal impeller, designed to pass solids, rags and fibrous material with less risk of blockage – while also handling sludge and shear-sensitive fluids more gently.
Yes. Hidrostal pumps are well suited to sludge pumping because their screw centrifugal impeller provides gentler handling and can manage thickened sludge with less risk of blockage.
Yes. Hidrostal pumps are designed to pass wipes, rags and other fibrous material with less risk of blockage – which is a key reason why they're used in difficult wastewater jobs.
Hidrostal pumps are used across:
- Wastewater treatment plants
- Pump stations
- Industrial wastewater systems.
Hidrostal pumps are designed to maintain high efficiency across a broad operating range – which can help reduce energy consumption when selected for the right project.
HidroMix is an external pump-driven mixing system that recirculates sludge through strategically positioned nozzles to keep solids suspended and prevent settlement in tanks and digesters.