Alfa Laval S/P Flex Separator Spares

The Alfa Laval S and P Flex are high-speed centrifugal separators that purify marine fuel and lubricating oil, removing water and solids before the oil reaches the engine. They are among the most widely installed purifiers afloat, so their service parts are a recurring, high-frequency sourcing line tied to a defined overhaul interval. The bowl overhaul seal kit bundles the elastomer seals renewed at each service and must use a high-temperature compound such as Viton/FKM rated for fuel processing up to about 98 degrees Celsius. The friction clutch block set transmits drive to the bowl and must be weight-matched across the set, because uneven blocks induce bowl vibration and accelerate high-speed bearing wear. The bowl spindle assembly carries the rotating bowl at speeds up to 12,000 rpm and demands precise vertical tolerance and dynamic balancing. The EPC 50 controller board manages the separation cycle and must be configured to the engine room's communication protocol. Alfa Laval identifies these by service-kit and part designation tied to the separator model, so the model and duty must be confirmed. This series page lists the curated S and P Flex spares that make up a purifier overhaul, each carrying its designation for fitment verification before an RFQ.

Overhaul scope

A separator overhaul renews the bowl seal kit and inspects the friction blocks, bowl spindle and gravity disc. Seal compound and disc selection depend on the oil grade and density being processed.

Controls

The EPC 50 board manages the discharge cycle and must be configured to the engine-room communication protocol (for example MODBUS or PROFIBUS) before commissioning.

Maintenance notes

Match seal-kit elastomer to the processing temperature; weight-match friction blocks across the set. Configure the EPC 50 board to the engine-room protocol before commissioning.

Drawing & section references

  • IS/MS Kit Bowl overhaul seal kit
  • S-Flex Clutch Friction clutch block set
  • EPC 50 Separator controller board

Parts & spares

Fitted on

Related

Multi-part RFQ — no public pricing.

Frequently asked questions

How often is a separator overhauled?
On a defined interval, renewing the bowl seal kit and inspecting friction blocks, spindle and gravity disc.
What protocol does the EPC 50 use?
It is configured to the engine-room protocol, typically MODBUS or PROFIBUS.
What temperature do seal kits withstand?
High-temperature elastomers such as Viton/FKM rated for fuel processing up to about 98°C.