Our Advantage
- Industry-standard models from leading brands
- "Good-as-new" condition guarantee
- Complete units to spare parts
- Rigorously inspected units
- Cost-effective alternatives
Looking for engine parts?
View Engine PartsHigh-Quality Oil Purifiers
We specialize in the supply of high-quality, pre-owned Oil Purifiers for both Lubricating Oil (LO) and Fuel Oil (FO) applications. Recognizing the critical role of fluid purity in engine performance and machinery longevity, we provide rigorously inspected units that offer a cost-effective alternative to new equipment without compromising on operational integrity.
Every unit in our inventory is selected for its "good-as-new" condition, ensuring your operations remain seamless and efficient.
Our Core Inventory Includes:
Comprehensive range of oil purification solutions
Leading Brands:
We stock a comprehensive range of industry-standard models from:
Versatile Applications:
Solutions tailored for:
- Marine vessels
- Power plants
- Industrial manufacturing
Full-Spectrum Support:
From complete, ready-to-install purifier units to a vast inventory of genuine spare parts.
Application Types
Purification solutions for all your needs
Lubricating Oil (LO)
High-quality purifiers ensuring optimal lubrication system performance
Fuel Oil (FO)
Reliable purification for clean, efficient fuel combustion
Industries We Serve
Trusted purification solutions across multiple sectors
Marine Vessels
Solutions tailored for marine vessels requiring reliable fluid purity
Power Plants
Critical oil purification systems for power generation facilities
Industrial Manufacturing
Industrial manufacturing operations requiring clean lubricants
Technical Insights: Marine Oil Purifiers
Expert engineering observations from our dismantling facility.
What Is It?
A marine oil purifier (centrifugal separator) is high-speed rotating machinery used to separate water and solid particulate contaminants from fuel oil and lubricating oil using centrifugal force. By creating a high-G environment within the rotating bowl, higher-density substances (water, sludge, catalytic fines) are forced to the bowl periphery where they are periodically discharged, while the purified lighter oil is pumped out to the day tanks or engine sump. We heavily stock Alfa Laval, Westfalia, and Mitsubishi Samgong models.
Applications
Onboard marine vessels, purifiers are strictly divided into Fuel Oil (FO) and Lubricating Oil (LO) systems. Heavy Fuel Oil (HFO) purifiers are absolutely critical; modern residual fuels contain high levels of abrasive catalytic fines (cat-fines) which, if not removed, will rapidly destroy engine fuel pumps and cylinder liners. LO purifiers operate continuously on the main engine sump to remove water condensation, unburned carbon, and metallic wear particles, thereby extending the life of engine bearings.
Common Failure Modes
The most common operational failure is the loss of the water seal (blow-by), causing oil to discharge through the heavy phase (water) outlet. This is frequently caused by incorrect gravity disc selection, worn polyamide operating water seals, or a severely fouled disc stack. Mechanically, worn vertical shaft bearings—often due to out-of-balance bowl assemblies or lack of gear casing lubrication—result in excessive vibration that can eventually shear the vertical shaft or damage the bronze worm wheel.
Inspection Process
When we overhaul a separator, the entire bowl assembly is stripped and chemically cleaned. The sliding bowl bottom and operating slide are inspected for galling or uneven wear. The vertical and horizontal shafts are checked for run-out (straightness). We replace all bearings (using SKF/FAG) and completely re-kit the bowl with genuine O-rings. Crucially, the assembled bowl is mounted on a balancing machine to verify dynamic balance, preventing vibration issues upon installation.
Buyer Considerations
When purchasing a reconditioned purifier, always specify whether it will be used for FO or LO duty, as the bowl internals and heater sizing differ. Ensure the supplier provides the correct gravity disc sets for your specific oil density. Verify that the unit comes with a modernized EPC (Electronic Process Controller) panel if upgrading from older relay-logic systems. Lastly, request the dynamic balancing report for the bowl assembly to guarantee a vibration-free start-up.
Oil Purifiers — Common Questions
Answers to specific questions our clients ask about sourcing marine oil purifiers and separators.
Which Alfa Laval oil purifier models do you stock bowl assemblies and disc stacks for?
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We stock bowl assemblies, disc stacks, and internal components for Alfa Laval MOPX, FOPX, LOPX, WHPX, S-type (S-831, S-835, S-836), and P-type separators. All bowls are dynamically balanced, and disc stacks are ultrasonically cleaned before supply.
Can you supply a complete reconditioned Alfa Laval FOPX fuel oil purifier unit?
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Yes. We can supply complete reconditioned Alfa Laval FOPX and S-type separator units. Each unit undergoes complete stripping, replacement of all bearings and O-rings with genuine spares, dynamic balancing of the rotating assembly, and a full bench test run for vibration and separation efficiency before dispatch.
What is the reconditioning process for a marine separator bowl assembly?
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The reconditioning process involves completely stripping the bowl, chemical cleaning and desludging, inspecting the sliding bowl bottom and operating slide for wear, checking the lock ring threads, replacing all polyamide gaskets and O-rings, and finally dynamically balancing the entire assembly.
Do you supply Mitsubishi Samgong separator spare parts like vertical and horizontal shafts?
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Yes, we hold extensive stock of spare parts for Mitsubishi Samgong SJ series separators (e.g., SJ-10G, SJ-30G, SJ-50G), including vertical shafts, horizontal shafts, worm gears, bowl bodies, and complete service kits.
Request a Quote
Contact us with your oil purifier requirements today. Our team will provide you with detailed information, pricing, and availability for premium used oil purifiers including complete units and spare parts.