Overview
The Alfa Laval MAB 103 Centrifuge is a solid-retaining (aka solid bowl; manual-clean), disc-stack centrifuge ideal for the continuous, three-phase separation of fuels, such as diesel, biodiesel, and turbine lube oil.
With a 1 HP motor, the MAB 103 centrifuge has a bowl speed of 8,600 RPM. The OEM table lists 900 L/h (3.96 US GPM derived) for diesel at 40 °C and 13 cSt, 500 L/h (2.20 US GPM derived) for engine lube oil at 80–90 °C, and 800 L/h (3.52 US GPM derived) for steam turbine lube oil at 60–70 °C.
Dolphin Centrifuge is the independent specialist in Alfa Laval centrifuges. Apart from Alfa Laval itself, Dolphin is the reliable source for quality Alfa Laval machines: remanufactured centrifuges, turnkey systems, parts, and service, built on 40+ years of Alfa Laval experience and led by Sanjay Prabhu, M.S.M.E. Every MAB 103 we ship is a genuine Alfa Laval machine, stripped, rebuilt, and test-run in Warren, Michigan. Ordered as a complete system, the same centrifuge ships as the Dolphin DMB-004 module, where the skid, pump, heater, and controls are Dolphin's engineering and the separator inside is Alfa Laval. That is why the photographs on this page also appear on the DMB-004 page. Dolphin is an independent remanufacturer and is not affiliated with Alfa Laval.
This is the smallest Alfa Laval centrifuge we supply - skid-mounted with controls and pumps, starting around the mid-$30s. It suits small but established operations and high-value fluids (turbine/lube oil, clean diesel). For very low volumes of low-value fluid, simpler heat and settle methods are usually more cost-effective.
Dimensions
Specifications
| Centrifuge Model | Alfa Laval MAB 103 B 24-60 |
| OEM Application Capacity - Gas Oil | 1,150 L/h (5.06 US GPM derived), 40 °C |
| OEM Application Capacity - Diesel Fuel | 900 L/h (3.96 US GPM derived), 40 °C, 13 cSt at 40 °C |
| OEM Application Capacity - R&O Lube Oil | 400–500 L/h (1.76–2.20 US GPM derived), 80–90 °C |
| OEM Application Capacity - Detergent Lube Oil | 300–400 L/h (1.32–1.76 US GPM derived), 80–90 °C |
| OEM Application Capacity - Trunk-Piston Detergent Lube Oil | 200–300 L/h (0.88–1.32 US GPM derived), 80–90 °C |
| OEM Application Capacity - Engine Lube Oil | 500 L/h (2.20 US GPM derived), 80–90 °C |
| OEM Application Capacity - Steam Turbine Lube Oil | 800 L/h (3.52 US GPM derived), 60–70 °C |
| OEM Rated Reference (source fluid unspecified) | 1,300 L/h (5.72 US GPM derived); not an application capacity |
| Sludge Space | 0.14 Gallons |
| Bowl Speed | 8,600 RPM |
| Net Weight | 250 Lbs. |
| Dimensions | 24" x 30" x 26" (Bare Centrifuge) |
| Motor Power | 1 HP |
| Voltages | 230 / 460 V or 110 V Single Phase |
US GPM values are derived from the published L/h figures using 1 US GPM = 227.124707 L/h. See the authoritative technical-data registry for fluid conditions and machine-readable records.
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The Alfa Laval MAB 103 is designed for mineral oil and fuel separation applications. Therefore, the material used in its construction is well suited for such uses. The following table lists the various components of the centrifuge and the material it is made of.
| Bowl Body & Bowl Hood | 316L Duplex Stainless Steel |
| Disc Stack | 316L Duplex Stainless Steel |
| Distributor or Disc Carrier | Marine Grade Bronze or 316 Stainless Steel (Special Order) |
| Top Disc | Marine Grade Bronze or 316 Stainless Steel (Special Order) |
| Top Covers (Collecting) | Silium (Aluminum Alloy) |
| Frame | Nodular Cast Iron |
If you have simple, routine questions: We have condensed our 40+ years of disc-stack centrifuge experience into 101 Frequently Asked Questions about Disc Stack Centrifuges!
Applications
The Alfa Laval MAB-103 is a purifier-type disc-stack centrifuge. It is designed to separate water (moisture) and fine sediment from mineral oil and lubricating oil. It is primarily used for purifying fuels such as diesel, kerosene, etc.
The MAB-103 is also used for separating water and fine sediment from lubricating oil, hydraulic oil, and other mineral oils.
Explosion Proof Configuration
The installation of the MAB-103 centrifuge in hazardous areas requires the centrifuge system to be specially designed and configured with an explosion-proof motor, direct-drive transmission (replace friction clutch), and classified field sensors.
The control system upgrade includes a NEMA 7 electrical enclosure, cables, conduits, and glands suitable for the specific zone of the centrifuge installation.
We configure our MAB-103 centrifuge similar to the Alfa Laval OCM-103-Ex configuration with an ATEX Zone 2 (non-sparking) configuration for offshore applications. You can read more about our disc-stack centrifuges for offshore applications.
Modifications
The MAB 103 centrifuge needs modifications for specific applications such as hazardous area installation, and processing of water-based fluids, oil, or fuel. The following is a list of common modifications by Dolphin Centrifuge based on the specific application.
| Centrifuge Modification | Application / Purpose |
|---|---|
| Direct Drive (Replace Friction Clutch) | Explosion Proof Configuration |
| Non-Sparking Friction Blocks | Explosion Proof Configuration |
| Pump Reconfiguration (Capacity) | Lube Oil to Light Fuel OR Light Fuel to Lube Oil |
| Seals Elastomer (Viton / EPDM) | Biodiesel, Hemp Ethanol, Corrosive Chemicals, etc. |
| Gear Pump Replacement | Water-Based Fluids (Steel Gear Pump not Suitable) |
| Operating Frequency Conversion | Adapt to Operating Voltage Frequency (50 or 60 Hz) |
| Special Motor Adaptation | Single Phase (110 V or 220 V) Voltage Application |
| Bowl Parts Material Upgrade | Convert Bowl Parts to Stainless Steel (Aqueous Ammonia) |
| Purifier to Clarifier | Convert from 3-Phase to 2-Phase Mode (Clarifier) |
Operation
The fuel or mineral oil is fed into the rotating bowl of the MAB-103 centrifuge. The bowl exerts a high g-force (8,500 Gs) on the process fluid. The centrifugal force causes rapid sedimentation of the solid particles down to 0.5 Microns.
This separated sludge should be manually evacuated by the operator. The heavy phase (water) phase also settles out and exits the bowl through a separate outlet.
Alfa Laval WSB 203 70 Manual Clean, Concentrator Disc-Stack Centrifuge
The Alfa Laval WSB 203 Centrifuge is a solid-retaining (aka solid bowl; manual-clean), disc-stack centrifuge ideal for the continuous, three-phase separation of water-based industrial fluids like machining coolant and washer fluid.
With a 1 HP motor, the WSB 203 centrifuge has a bowl speed of 8,600 RPM. Dolphin publishes a separate 1 US GPM application figure for water-based synthetic coolant; it is not an MAB 103 OEM capacity and is outside the current OEM capacity registry.
Specifications
| Model Type | Alfa Laval WSB 203 70 |
| Dolphin Application Figure | 1 US GPM on parts-washer fluid; outside the current OEM capacity registry |
| Sludge Space | 0.14 Gallons |
| Motor HP | 1 HP |
| Voltages | 230 / 460 V |
Material of Construction
The Alfa Laval WSB 203 is designed for mineral oil and fuel separation applications. Therefore, the material used in its construction is well suited for such uses. The following table lists the various components of the centrifuge and the material it is made of.
| Bowl Body & Bowl Hood | 316L Duplex Stainless Steel |
| Disc Stack | 316L Duplex Stainless Steel |
| Distributor or Disc Carrier | 316L Duplex Stainless Steel |
| Top Disc | 316L Duplex Stainless Steel |
| Top Covers (Collecting) | Silium (Aluminum Alloy) |
| Frame | Nodular Cast Iron |
Applications
The Alfa Laval WSB-203 is a concentrator version of the MAB-103 disc-stack centrifuge. It is specifically designed to concentrate oil from water-based industrial fluids such as machine coolant, washer fluid, parts washer solvent, water-soluble cutting oils, de-oiling of split emulsions, etc.
Operation
The process fluid is fed to the rotating centrifuge bowl from the top (1) and is sped up in the distributor (2). It then enters the disc stack (3), and it is between the discs that the separation occurs.
The high centrifugal force pushes the water-based fluid and heavy solids to the bowl wall. The solids accumulate here, and the water-based fluid travels over the top disc (4) and exits the bowl through the open outlet (5). The oil (light phase) is moved towards the bowl center and exits the bowl through the open outlet (6).
The centrifuge needs to be periodically stopped for manual removal of separated solids.
The rotating bowl assembly is mounted on a vertical 'bowl spindle' (7). A horizontally mounted motor rotates the spindle via a worm gear.
Alfa Laval MAB 103 Centrifuge Modules
Dolphin Centrifuge has supplied the Alfa Laval MAB 103 centrifuge for a multitude of applications. The images below show some commonly sold configurations.
Packaged as a complete turnkey system, these MAB 103 configurations are catalogued as the Dolphin DMB-004 module: a Dolphin skid, pump, heater, and control panel wrapped around this same remanufactured Alfa Laval centrifuge.
