
Technical Solutions · Commercial pump stations
Commercial pump stations for stormwater, sewage, effluent and trade waste
Select a GRAF wet well or pump-out tank body, then configure pumps, pipework, valves, level controls and commissioning around the hydraulic duty.
Pump-out wet wells - stormwater and wastewater transfer

GRAF Carat pump-out wet well
Process
Pump station system
Underground collection flows into a GRAF Carat or Sapphire pump-out wet well, where submersible pumps transfer water to the discharge header.
- 1Stormwater or wastewater flows to underground collection point
- 2GRAF Carat / Sapphire pump-out tank - pre-fabricated wet well with access cover
- 3Submersible pump, riser pipework and level controls
- 4Discharge to sewer main, irrigation or downstream treatment
Commercial and industrial pump station packages are quoted to project location and scope. Australia-wide supply pathways exclude Victoria unless confirmed for the specific works.
How the system works
From inflow to discharge
1. Collect
Wastewater or stormwater enters the selected wet well.
2. Store
Usable and emergency storage is established around the project inflow.
3. Pump
Pump type and quantity are selected from the hydraulic duty and fluid.
4. Control
Floats, level instrumentation and controls manage operation and alarms.
5. Discharge
Pipework and valves deliver flow into the rising main or receiving system.
6. Maintain
Commissioning and lifecycle support are considered from the start.
Choose the application
Stormwater
Basements, car parks, loading docks, warehouses, industrial yards and civil drainage.
Sewage
Commercial buildings, apartments, hospitality, schools, remote facilities and sewer lift applications.
Effluent
Treated wastewater, greywater, irrigation transfer and treatment-plant outlet pumping.
Trade waste
Application-specific commercial or industrial wastewater transfer where fluid compatibility must be reviewed.
Browse the Pump Stations catalogue for wet-well chambers, pump-out tanks and verified size data.
Wet wells and pump-out tanks
Carat pump station tanks
Polyethylene wet wells from 2,700 L, with XL and XXL options for larger duties.
View productSapphire pump station tanks
Compact Australian-made wet well bodies from 600 L to 1,500 L.
View productGRAF Super Strong Pump Out Tank
Heavy-duty Australian-made pump-out tank bodies from 600 L to 1,500 L.
View productWhat we need to size the station
- Project location
- Design flow or inflow
- Static head
- Rising-main length and diameter
- Pipe material, valves and fittings
- Wastewater or stormwater type
- Solids characteristics
- Required storage
- Available power
- Control and BMS requirements
- Site access, loading and groundwater information
- Drawings and specification
FAQ
- Does GRAF supply more than the tank?
- Yes. The Pump Stations catalogue covers wet-well chambers and pump-out tank bodies. Commercial projects can also request coordinated pumping, controls and associated equipment through GRAF Australia.
- Are commercial pump stations available nationally?
- Project delivery, commissioning and field attendance are confirmed against the project location and scope. Share site details with the quote request.
- Can GRAF review an existing pump schedule?
- Yes. Upload the drawings, duty point and specification through the quote pathway on grafaustralia.com.au.
Size a commercial pump station
Send plans, required flow, head, rising-main details and site location.