Fuelco SA | Self Bunded Tanks | Bulk Diesel Tanks | Fuel Tanks
Fuel Polishing Systems | 25 – 850 L/min
Water and dirt find their way into every stored fuel tank. A Fuelco fuel polishing system circulates your diesel through high-efficiency filtration and a water separator, automatically, so your generators and equipment start when you need them, not when the fuel feels like it.
Why fuel polishing
Diesel sitting in a tank picks up water from condensation, plus dirt and sludge over time. Water at the bottom of the tank is where microbial growth (the infamous “diesel bug”) gets going, and the result is blocked filters and injectors at the worst possible moment. Fuel polishing keeps your fuel moving through filtration that removes water and contaminants, extending fuel life and keeping equipment uptime where it should be.
A highly efficient two-stage fuel filter water separator removes water and particles, with an optional pre-filter for heavier contamination.
A relay or PLC-based smart controller with a programmable run timer runs the polishing cycle for you.
Alarms for water detection, high pressure, differential pressure and leaks, with remote monitoring via Ethernet, Modbus TCP/IP or voltage-free alarm contacts.
Market-leading heavy-duty components and stainless steel pipework, factory assembled, packaged and tested before delivery.
Choose your system
Systems are sized by flow rate and tank volume. Pick the group that matches your tank and we’ll confirm the exact model.
FLOW RATE: 25 – 50 L/min
Tank size: Up to 15–30 m³ (15,000–30,000 L)
Design: Cabinet or wall-mounted
Power: 230 V, 50/60 Hz
Size and weight: 100 × 100 × 40 cm, approx. 45 kg
Best for: standby generators and smaller day tanks.
FLOW RATE: 35 – 100 L/min
Tank size: Up to 21–60 m³ (21,000–60,000 L)
Design: Wall or skid-mounted
Power: 230/400/460 V, 50/60 Hz
Size and weight: 120 × 120 × 40–50 cm, approx. 75–90 kg
Best for: hospitals, data centres and commercial generator rooms.
FLOW RATE: 135 – 850 L/min
Tank size: Up to 80–510 m³ (80,000–510,000 L)
Design: Skid-based or containerised
Power: 230/400/460 V, 50/60 Hz
Size and weight: 140 × 140 × 140 cm to 160 × 140 × 140 cm, approx. 450–650 kg
Best for: bulk fuel farms, mines and large backup power plants.
Not sure which size? Tell us your tank size and what it’s feeding, and we’ll recommend the right system.
How it works
1. Draw: A self-priming positive displacement pump draws fuel from the bottom of the tank, where water and sediment collect, through an inline strainer.
2. Filter: Fuel passes through an optional pre-filter (5, 10 or 25 micron), then a two-stage fuel filter water separator (0.5, 1 or 5 micron).
3. Separate: Water is captured and drained off, and a water detection switch alerts you when it’s found.
4. Return: Clean, dry fuel goes back into the tank, ready to use.
5. Check: Running sample points, plus an optional flow meter and particle counter, let you check fuel quality while the system works.
See it in action
Hear it straight from the Fuelco team: what polishing does, and why your stored fuel needs it.
Inside the system
Every Fuelco polishing system is built from market-leading components, factory assembled, packaged and tested at our facilities, so it arrives as a ready-to-use, reliable solution.
STANDARD: Inlet and outlet isolation valves, inlet solenoid valve, inline strainer, self-priming pump, two-stage fuel filter water separator, pressure gauges and switches, enclosure leak detection, water detection and a smart controller.
OPTIONAL: Magnetic fuel conditioner, pre-filter, flow meter and particle counter.
READY FOR: Fuel additives, via a manual additive introduction point.
BUILT BY: Fuelco, an ISO 9001 certified company.
Where it earns its keep
Generators that sit idle for months still need to start first time.
Clean fuel for backup systems where downtime isn’t an option.
Reliable standby fuel for critical buildings and services.
Protect expensive engines and injectors from contaminated diesel.
Keep large volumes of stored fuel in spec between deliveries.
Tank size, fuel type and what it’s feeding. We size the system.
Choose the size, mounting style and options like a magnetic conditioner, flow meter or particle counter.
We deliver to site and get you up and running.
Maintenance packages, repairs and support for the life of the system.
Fuel polishing questions
It’s the process of circulating stored fuel through filters and a water separator to remove water, sediment and other contaminants, keeping the fuel clean and ready to use.
Even fresh fuel picks up water from condensation, and contamination builds up in any stored fuel over time. Polishing keeps it clean before it becomes a problem, which matters most for fuel that sits for long periods, such as generator standby fuel.
Systems are sized by tank volume and flow rate, from the POL-25 for tanks up to 15 m³ to the POL-850-HD for tanks up to 510 m³. Send us your tank details and we’ll recommend a model.
Yes. The smart controller has a programmable run timer, plus alarms for water detection, high pressure, differential pressure and leaks. Remote monitoring is available via Ethernet, Modbus TCP/IP or voltage-free alarm contacts.
Yes. Running sample points let you take samples while the system is working, and an optional particle counter gives you a reading of fuel cleanliness.
Smaller systems come as a cabinet or wall-mounted unit. Larger systems are skid-based and can be containerised. Tell us about your site and we’ll recommend the best set-up.
Fuelco supplies the tanks as well as the polishing. Pair your system with a self-bunded tank from one of our ranges.
Tell us about your tanks and we’ll come back with the right polishing system and a clear quote. No jargon, no fuss.
