"> Alfa Laval S.p.A. MOPX-213-MDO-Purifier
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Alfa Laval S.p.A.

MOPX-213-MDO-Purifier

The Alfa Laval S.p.A. MOPX-213-MDO-Purifier is a legacy high-speed disc-stack oil separator configured for purification of marine diesel oil or comparable distillate fuel. It is generally installed in the engine-room fuel-cleaning system upstream of service tanks, booster equipment or engine fuel-system components. The rotating disc-stack bowl separates denser water and suspended solids from the lighter fuel phase. The duty is typically less viscosity-sensitive than heavy-fuel-oil separation, but stable feed conditions and the correct separator setup remain essential. The MOPX family was used in marine fuel- and lubricating-oil separation systems; the exact bowl, discharge and control arrangement depends on the installed specification. The MOPX-213-MDO-Purifier should be treated as a specific MDO purifier configuration rather than as automatically interchangeable with HFO or lubricating-oil versions of the same basic separator size. Exact process conditions, capacity and configuration details must be taken from the manufacturer documentation for the installed serial number.

Components & Design

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Technical Data

Model number MOPX-213-MDO-Purifier
Capacity (HFO) 16099 l/h
Capacity (lube oil) 12879 l/h
Bowl diameter 455 mm
Motor power 18.5 kW
Application oil-cooled purifier, optimised for marine diesel oil purification
Drive type Direct / gear-driven
Bowl type Self-cleaning disc-stack
Fuel type optimised MDO
Capacity (at optimum fuel) 16099 l/h

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Common failures & inspection points

●Incorrect purifier setup for the actual fuel condition, producing ineffective water separation or fuel loss to the water side
●Unexpected water ingress or heavily contaminated bunkers, producing persistent downstream contamination or rapid sludge loading
●Deposits in the bowl, disc stack or outlet passages, producing reduced separation performance or unstable flow
●Worn bearings, spindle or drive parts, producing abnormal vibration, noise or failure to maintain stable running
●Damaged seals or malfunctioning operating-water/discharge components where fitted, producing leakage, failed sealing or abnormal discharge cycles

Service & Maintenance

Inspect the bowl, disc stack and sludge space for water-related corrosion, particulate deposits and mechanical damage. Confirm the purifier arrangement after maintenance and verify correct routing of clean-oil and water outlets. Check drive condition, bearings, spindle, seals and any operating-water or discharge system fitted to the exact model. Review downstream fuel quality and separator operating behaviour after reassembly. Use the manufacturer documentation for exact process settings, wear limits, tightening values and maintenance intervals.

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Replacement Parts

Carry the correct routine service kit with seals, O-rings and model-specific renewable items. Depending on redundancy and voyage profile, consider selected bearings, drive parts, valve components and bowl-service items specified by the manufacturer. Verify compatibility with the separator serial number before using spares from another apparently similar unit.
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Equipment Model #153294 · ✓ still in production