The GEA Westfalia OSA 35-03-066 is a high-performance centrifugal oil separator built with self-cleaning disc stack technology. It is designed to separate liquids of different densities and solids simultaneously using centrifugal force — making it suitable for oil purification tasks in many sectors.
GEA Westfalia OSA 35-03-066
Key Characteristics
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Type: Self-cleaning disc-stack centrifugal separator.
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Function: Separates oil from water and solid contaminants.
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Capacity: ~3,400 L/h (varies by setup).
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Motor Power: ~15 kW electric drive.
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Bowl Speed: ~6,550 rpm.
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Electrical: Typically 380 V/50 Hz/3-phase.
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Construction: Heavy-duty separator with hinged hood and solids catcher for easier maintenance.
How It Works (Simplified)
The separator spins contaminated liquid at high speed.
✔ Light phase (clean oil) is discharged normally via a centrifugally driven pump.
✔ Heavy phase (water and sludge) is separated and ejected automatically.
✔ Solids collected during operation are periodically discharged via self-cleaning mechanisms.
Marine Department Uses
In marine environments, the OSA 35-03-066 plays a key role in keeping shipboard equipment reliable and efficient:
🔹 Fuel Oil Purification
Used to clean marine fuel oils (e.g., diesel or heavy fuel oil) to remove water and solids before combustion in main and auxiliary engines, protecting injectors and improving combustion efficiency.
🔹 Lube Oil Clarification
Cleans lubricating oil used in engine bearings, gears, and turbines. Cleaner lube oil reduces wear and extends service life of machinery.
🔹 Hydraulic Oil Cleaning
Hydraulic systems such as steering gear, deck machinery, and cranes also benefit from separation of contaminants that can cause pump wear or valve sticking.
🔹 General Oil Conditioning on Ships
For oil used in generators, compressors, and auxiliary engines — regular purification improves reliability while reducing maintenance and downtime.
Industrial Department Uses
The OSA 35-03-066 isn’t just for ships — it’s useful in a broad range of industrial settings where liquids and oils must be cleaned:
🔸 Power Generation
Used in power plants to remove moisture and solids from turbine and diesel generator fuels or oils, helping improve performance and lifecycle of rotating equipment.
🔸 Oil & Gas
Useful for treatment of crude oil streams, biodiesel blends, and refined fuel fractions, removing water and solids before downstream processing or combustion.
🔸 Manufacturing & Machine Shops
Purifies hydraulic oils, gear oils, and cutting fluids used in heavy machinery to prevent wear and contamination in equipment.
🔸 Chemical/Bio Industries
Can be used where two-phase or three-phase liquid separation (liquid-liquid-solid) is required in chemical or biochemical processes.
Why It’s Valuable (Benefits)
✔ Continuous, automated separation — Minimal operator intervention once running.
✔ Improved equipment life — Cleaner oil means pumps, engines, and turbines last longer.
✔ Broad applicability — Works for fuel oils, lube oils, hydraulic oils, process liquids.
✔ Robust design — Heavy build with hinged hood and solids catcher improves maintainability.
We are not an official distributor of GEA Westfalia Spares.




