Submersible Drainage Pumps
Submersible Drainage Pumps are suitable for liquids containing small solids in suspension.
From basements and carparks to stormwater, commercial facilities and industrial drainage, these tough performers help keep water moving and sites operating.
- Maximum Head
- Up to 33 m
- Maximum Flow
- Up to 23 L/sec
- Outlet Sizes
- 50–100 mm
- Solids Passage
- 5–20 mm
Typical Drainage Applications
▫️Stormwater & collection sumps
▫️Basements & carparks
▫️Commercial & municipal drainage
▫️Industrial process water
Benefits
Heavy-Duty Construction: Built for dependable drainage service..
Automatic Options: Models available in 240V & 415V auto configurations.
Triplex Seal System: Supports reliable protection of the pump motor.
Thermal Motor Protection: Helps safeguard pump against overload conditions.
Where Submersible Drainage Pumps Perform
- Stormwater & Sumps
- Basements & Carparks
- Commercial & Municipal
- Industrial Process Water
Built for abrasive slurry transfer where seal wear, solids loading and maintenance downtime are common issues.
Built for abrasive slurry transfer where seal wear, solids loading and maintenance downtime are common issues.
Best suited for:
- Stormwater pits and collection sumps
- Rainwater and surface-water drainage
- Commercial and municipal drainage systems
- Liquids with small solids in suspension
Selection considerations:
- Confirm peak inflow, required flow and discharge head
- Check pit dimensions, operating levels and solids passage requirements
- Select manual or automatic operation to suit the site requirements
For stormwater and sump drainage where dependable water removal and small-solids handling are required.
Built for abrasive slurry transfer where seal wear, solids loading and maintenance downtime are common issues.
Best suited for:
- Industrial process-water removal
- Plant drainage and production-area sumps
- Washdown and collected drainage water
- Liquids containing small, suspended solids
Selection considerations:
- Confirm liquid characteristics, temperature and material compatibility
- Check solids size and concentration before model selection
- Match the pump to operating hours, duty cycle and discharge conditions
For industrial drainage duties where pump selection must account for liquid characteristics, solids, duty cycle and site conditions.
Built for abrasive slurry transfer where seal wear, solids loading and maintenance downtime are common issues.
Best suited for:
- Shopping centres and commercial buildings
- Council facilities and public infrastructure
- Managed stormwater and drainage systems
- Higher-capacity drainage duties
Selection considerations:
- Match the required flow, head and outlet size to the complete system
- Confirm electrical supply, controls and expected operating frequency
- Consider duty/standby arrangements, maintenance access and serviceability
For commercial and municipal drainage systems requiring dependable operation across varied site and flow conditions.
Process & Utility Pumps
Reliable centrifugal and booster systems that support on-site water transfer, tank filling, and wash-down applications — built for everyday performance across civil construction environments.
Explore products:
Built for abrasive slurry transfer where seal wear, solids loading and maintenance downtime are common issues.
Best suited for:
- Basement drainage pits
- Underground and multi-level carparks
- Building-services drainage systems
- Areas requiring automatic water-level control
Selection considerations:
- Review sump capacity, installation space and access
- Confirm automatic control, alarm and backup pump requirements
- Check electrical supply, discharge route and maintenance access
For below-ground drainage systems where reliable water removal helps protect buildings, carparks and access areas.
Gentle low-shear transfer for sauces, syrups, flavourings, and other sensitive food ingredients.
Best suited for:
- PLC batching skids
- sensor feedback loops
- remote alarms
- containerised dosing plants
Key strengths:
- easy controls integration
- repeatable outputs
- compact footprint
- future scalability
Ideal when the pump needs to become part of a smarter, controlled process system.
A broad range of compact drainage pumps for basement, carpark, stormwater and commercial drainage duties.
- Models: RSD.50.04, RSD.50.075, RSD.50.11, RSD.50.22
- Outlet: 50 mm
- Power: 0.4–2.2 kW
- Solids passage: 5–11 mm
- Speed: 2900 rpm
- Automatic options: Selected models are available in 240 V and 415 V automatic configurations.
Selection note:
Best suited where a 50mm discharge, compact installation and lower-to-medium drainage capacity meet the required duty.
Higher-capacity drainage options for stormwater, commercial, municipal and industrial drainage systems.
- Models: RSD.80.075, RSD.80.15, RSD.80.22, RSDC.80.37
- Outlet: 80 mm
- Power: 0.75–3.7 kW
- Solids passage: 10–16 mm
- Speed: 2900 rpm
- Automatic options: Selected models are available in 240 V and 415 V automatic configurations.
Selection note:
Best suited where increased flow, a larger discharge outlet or greater solids passage is required.
Larger drainage pumps for higher-capacity commercial, municipal and industrial duties.
- Models: RSD.100.22, RSDC.100.55
- Outlet: 100 mm
- Power: 2.2–5.5 kW
- Solids passage: 11–20 mm
- Speed: 2900 rpm
- Automatic options: Selected models are available in 240 V and 415 V automatic configurations.
Selection note:
Best suited where higher drainage capacity, a 100 mm discharge and increased solids passage are required.
FAQ's
for Drainage Pumps
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What type of liquids are these drainage pumps designed for?
Remko RSD Series pumps are designed for draining liquids containing small solids in suspension, including stormwater, basement drainage and commercial or industrial drainage water.
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Are these pumps suitable for continuous operation?
Suitability for continuous operation depends on the selected model, duty point, liquid characteristics and installation conditions. Contact Allflo to confirm the pump and operating arrangement for ongoing or high-frequency drainage duties.
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Do these pumps handle abrasive materials or large solids?
The RSD Series is designed for liquids containing small solids in suspension, with solids passage ranging from 5–20 mm depending on model. For larger solids, fibrous material or abrasive slurry, the Remko submersible slurry pump range is more appropriate.
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Are automatic versions available?
Yes. Automatic versions are available on selected RSD models in 240 V and 415 V configurations. Availability depends on the specific model.
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Where are these pumps typically installed?
Typical applications include stormwater systems, basements, carparks, shopping centres, commercial buildings and industrial process-water drainage.

