Submersible Pumps For Drainage And Sewage
Submersible drainage and sewage pumps from 10 to 800 m3/h with heads to 60 m. Vortex or channel impellers, 40 to 100 mm solids handling, and hard-wired or quick-coupling installs.
Everything You Need To Spec Your Submersible Pumps
Jump straight to the section that answers your question, from duty ranges and model data to quality control and sending us your project details.
Built For Pits, Stations, And Dewatering Sites
AF-S pumps live in the wet well and keep working when others trip: vortex impellers for ragged sewage, single or three channel impellers for clean drainage, and a mixer option for stations that tend to settle. Every unit is submersion tested before it leaves the hall.
- Vortex, single-channel, and three-channel impeller options
- Solids handling from 40 to 100 mm depending on model
- Double mechanical seal in oil bath with leakage probe
- Cast iron or duplex stainless wet ends for corrosive wells
AF-S Model Data
Nominal duty data for the current AF-S frames.
| Model | Flow (m3/h) | Head (m) | Motor (kW) | Solids (mm) | Status |
|---|---|---|---|---|---|
| AF-S-050 | 10 to 45 | 4 to 14 | 1.1 to 3 | 40 | In Production |
| AF-S-080 | 25 to 120 | 6 to 22 | 3 to 7.5 | 50 | Best Seller |
| AF-S-100 | 60 to 250 | 8 to 35 | 5.5 to 18 | 70 | In Production |
| AF-S-150 | 150 to 500 | 10 to 48 | 15 to 55 | 80 | In Production |
| AF-S-200 | 350 to 800 | 12 to 60 | 30 to 90 | 100 | Made To Order |
Values are nominal for clean water at 20 degrees C. Confirm duty point, fluid, and motor standard with our sales engineer before ordering.
Where The Submersible Pumps Runs
Six duties this series handles week in, week out, with the configuration notes our engineers apply first.
Sewage Lift Stations
Vortex impellers with guide-rail coupling and gate-valve discharge.
Construction Dewatering
Abrasive-ready drainage units with hard-chromed shafts.
Stormwater Tanks
Duty-standby pairs with auto-alternation control panels.
Farm Lagoons
Slurry transfer with chopper option for long fibres.
Mine Pits
Duplex stainless builds for acidic pit water.
Ship Bilges
Compact 50 Hz units with marine certification on request.
From Duty Point To Shipment
Four steps, each with a written output, so you always know what happens next and what arrives with the pump.
Well Survey
Send the well drawing, inflow, and fluid analysis; we check dwell time and solids load.
Impeller Match
Vortex for rags, channel for clean water, chopper for fibres; you get the reasoning in writing.
Wet Test
Submersion and insulation test plus 30-minute dry-run of the motor before packing.
Install Support
Guide-rail drawings, coupling dimensions, and commissioning checklist for your contractor.
Submersible Pumps In Real Projects
Pumping stations and process lines built with this series, straight from our cases and video library.
CaseMiddle East and AfricaEgypt Phosphate Mine Pit DewateringAbrasive pit water at pH 5 killed three sets of pumps in a year; duplex-stainless AF-S units with...
CaseAsia-PacificBangkok Housing Estate Lift Station RetrofitA 1,200-unit estate ended monthly rag-pulling callouts by moving to AF-S vortex pumps with guide-rail couplings; the station...
VideoAF-S Guide Rail Installation WalkthroughHow an AF-S submersible lands on its auto-coupling without anyone entering the wet well. Frequently Asked Questions
Vortex or channel impeller, which one do I need?
Vortex impellers pass rags and stringy solids with almost no clogging but lose a few efficiency points. Channel impellers are more efficient on cleaner water. If your station serves a hospital, restaurant row, or old combined sewer, choose vortex.
How deep can the pump be submerged?
Standard sealing allows 20 m of continuous submersion; 30 and 40 m versions use an increased-pressure oil bath. Confirm well depth and cable length with the order.
What maintenance does an AF-S need?
Check the oil chamber yearly, replace the lower seal at 8000 running hours or when the leakage probe trips, and inspect the impeller whenever vibration rises. We supply seal kits with part numbers in the manual.
Can these run on a generator?
Yes. Submersible motors tolerate generator supply well; give us the generator kVA and we confirm the DOL or soft-start sizing for your model.
Do you supply the complete lifting system?
Yes: guide rail, auto-coupling base, discharge elbow, chains, and floor stands, dimensioned to your well drawing.
Request Your Pump Configuration
Lena Zhao
Sales Engineer, Aquaflow Pumps
Replies within 24 hoursSend your duty point and site details. Lena comes back with a pump selection, a curve match, and a quotation.
Useful details: fluid, flow, head, fluid temperature, voltage and frequency, and any space or noise limits. A photo of the existing installation also helps.
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