Products

Product categories

Products

FILOIL 1500

Transformer oil treatment plant

The compact FILOIL configuration. 1 500 l/h, mineral oil and esters, stationary or mobile, on or off-line transformers.
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FILOIL 3000

Transformer oil treatment plant

The mid-compact FILOIL. 3 000 l/h, mineral oil and esters, stationary or mobile, on or off-line transformers.
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FILOIL 6000

Transformer oil treatment plant

The standard FILOIL. 6 000 l/h, mineral oil and esters, stationary or mobile, on or off-line transformers.
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FILOIL 9000

Transformer oil treatment plant

The high-throughput FILOIL. 9 000 l/h, mineral oil and esters, stationary or mobile, on or off-line transformers.
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FILOIL 12000

Transformer oil treatment plant

The large-asset FILOIL. 12 000 l/h, mineral oil and esters, stationary or mobile, on or off-line transformers.
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FILOIL 24000

Transformer oil treatment plant

The flagship FILOIL. 24 000 l/h, mineral oil and esters, stationary or mobile, on or off-line transformers. Configurable in parallel for 48 000 l/h installations.
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FILOIL 3000 est

Ester oil treatment plant

The compact FILOIL for esters. 3 000 l/h, natural and synthetic esters, < 10 ppm water, > 95 kV breakdown. Mobile-friendly design for on-site service of ester-filled transformers.
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FILOIL 6000 est

Ester oil treatment plant

The mid-range FILOIL for esters. 6 000 l/h, natural and synthetic esters, < 10 ppm water, > 95 kV breakdown. Bridges portability and throughput for utility and service-fleet operation.
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FILOIL 9000 est

Ester oil treatment plant

The high-throughput FILOIL for esters. 9 000 l/h, natural and synthetic esters, < 10 ppm water, > 95 kV breakdown. For transformer factories, large service operations, and industrial-scale ester oil handling.
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REOIL S

Transformer oil regeneration plant

The compact mobile REOIL. For distribution transformers (1-5 MVA) up to 5 000 kg oil capacity. 1 000 l/h, up to 6 adsorption columns, full FILOIL process integration. Built for urban substations, renewable sites, and remote installations.
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REOIL M

Transformer oil regeneration plant

The mid-range REOIL. For medium and large power transformers (5-100 MVA) up to 30 000 kg oil capacity. 6 000 l/h, up to 10 columns (5×2), optional dual bank, full FILOIL process integration. Continuous online operation on energized transformers.
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REOIL L

Transformer oil regeneration plant

The high-capacity REOIL. For large power transformers (40+ MVA) up to 100 000 kg oil capacity. 9 000 l/h, up to 24 columns (12×2), dual-bank architecture for uninterrupted regeneration. For transmission system operators and large transformer fleets.
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REOIL Module

Transformer oil regeneration module

Mobile adsorption-based regeneration unit, paired with a separate FILOIL plant for full oil restoration. 9 000 l/h, up to 24 columns, automatic in-line sorbent reactivation. For service teams running regeneration campaigns with existing FILOIL equipment on-site.
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ECOIL 2000

Transformer oil purification plant

The compact ECOIL. 2 000 l/h, mineral oil and esters, fixed configuration, available from stock.
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ECOIL 5000

Transformer oil purification plant

The mid-range ECOIL. 5 000 l/h, mineral oil and esters, fixed configuration, available from stock.
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ECOIL 8000

Transformer oil purification plant

The full-capacity ECOIL. 8 000 l/h, mineral oil and esters, fixed configuration, available from stock.
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VACOIL S

Transformer vacuum equipment

The compact VACOIL. 200 m³/h primary, 750 m³/h secondary. Lightweight and mobile, for field service and tight spaces.
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VACOIL M

Transformer vacuum equipment

The mid-size VACOIL. 300 m³/h primary, 2 000 m³/h secondary. Stationary or mobile, the everyday workhorse.
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VACOIL L

Transformer vacuum equipment

The high-capacity VACOIL. 660 m³/h primary, 5 600 m³/h secondary. For transformer factories, large drying ovens, and high-throughput field operations.
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CABOIL

Bespoke dielectric oil treatment

Custom-built for dielectric oils in non-energy applications — X-ray machines, vacuum pumps, pulse generators, cooling systems. Engineered around the customer's oil and process.
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SORBOIL

Bespoke sorbent purification

Industrial-scale sorbent-based purification using activated bauxite. For acidity reduction, sulfur removal, and sorbent reactivation in oil production and recycling.
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MIXOIL

Bespoke additive blending and dosing

Precision mixing, dosing, and conditioning of oils with additives, inhibitors, and performance-enhancing agents. Standalone or production-line integration.
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STOROIL

Bespoke intelligent oil storage

Storage with integrated filtration, real-time quality sensors, heating, and vacuum for de-aeration. Custom-sized to oil type and operational requirements.
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Services

Service categories

Services

Transformer oil regeneration Corrosive sulfur removal Transformer oil treatment Transformer oil filling
Oil treatment plant rental Oil regeneration plant rental
Spare parts & consumables Technical support

Full oil restoration to like-new condition

Restores degraded transformer oil to IEC 60422 specification. Acidity, tan delta, interfacial tension, breakdown voltage, and water content are returned to fresh-oil values. Performed on-site, on live transformers, using Ekofluid REOIL equipment.
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DBDS and elemental sulfur removal

Removes corrosive sulfur compounds per IEC 62697 and IEC 62535, including DBDS and elemental S8 sulfur. The oil is simultaneously fully regenerated. Performed on-site, on live transformers.
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On-site, IEC 60422

Lowers water content, dissolved gas, and particle contamination to IEC 60422 specification. Performed on-site using FILOIL equipment, with no transformer downtime required.
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Vacuum filling for new and serviced transformers

Fills evacuated transformers with treated oil to specification. Vacuum-controlled to prevent moisture and air ingress. Performed on-site for new commissioning or post-service refills.
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FILOIL on rental terms

FILOIL transformer oil treatment plants available for short-term campaigns or extended deployments. Equipment delivered, commissioned, and optionally operated by Ekofluid technicians — or handed over to the customer's trained team.
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REOIL on rental terms

REOIL transformer oil regeneration plants available for short-term campaigns or extended deployments. Includes sorbent and reactivation capability. Delivered, commissioned, and operated by Ekofluid technicians or handed over to the customer's team.
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OEM parts for installed equipment

Genuine OEM spare parts and consumables for Ekofluid FILOIL, REOIL, ECOIL, VACOIL, and Bespoke equipment. Filter elements, sorbent media, vacuum pump components, seals, and consumables. Detailed catalogue available on request.
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Remote and on-site support for installed equipment

Remote diagnostics, on-site service visits, operator training, and parts logistics for the global installed base. Multi-language support from the Vienna and Levice teams.
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Industries
References
About Us

Services

Three teams across one Ekofluid: onsite operations on energized transformers, equipment rental for in-house crews, and lifetime parts and technical support for everything we deliver.

Onsite services

Transformer oil services

From onsite oil treatment on energized transformers to corrosive sulfur removal, regeneration, and vacuum-assisted filling — we deliver transformer oil services on site, backed by decades of field expertise and the same equipment we engineer and build in-house.

Rental

Equipment rental

Rent our FILOIL treatment and REOIL regeneration plants for short or long-term deployment at your site. Delivered, commissioned, and ready to run — operated by your crew or by our engineers. Treatment and regeneration capacity when you need it, without the capital cost of ownership.

Spare parts & support

Spare parts & support

Genuine OEM spare parts, consumables, and lifetime technical support for your Ekofluid equipment. Because we engineer and build the plants in-house, the parts fit and the support comes from the people who designed them — for the full service life of the unit, not just the warranty.

Not sure where to start?

Tell us your transformer and your situation. Our engineers will route you to the right team — service, rental, or support.

Talk to our team