Lubricating oil filters

Alfa Laval automatic lube oil filter systems are designed specifically for full-flow filtering of the lubricating oils used in trunk piston and crosshead engines. Their extremely effective filtering prevents contaminants from entering sensitive parts of the engine, thus reducing engine wear and boosting reliability. Their compact, space-saving design makes them easy to install and to retrofit as upgrades to existing installations.

The continuous backflushing that is a core feature of Alfa Laval automatic lube oil filter systems prevents any solids adhering to the filter surfaces – which means no manual cleaning of filter elements is required. The filters therefore run with more than 12,000 operating hours between cleaning and inspection.

In addition, there is only a low, constant pressure drop across the filter elements, which reduces the risk of them cracking. During backflushing there is no pressure drop at all. The near-constant pressure in the engine’s lubricating oil system makes it easier to detect any malfunctions, simply by registering pressure changes.

There are three main types of Alfa Laval lube oil filter, all with an automatic backflushing system. The X type is designed for use with crosshead engines, the T type for use with trunk piston engines and the Eliminator type for use with trunk piston engines of up to 5,000 kW in capacity.

Certain X and T models are available with a special diversion chamber that collects any particles backflushed from the full-flow chamber, acting as an automatic, maintenance-free sludge treatment system. The Eliminator models actually supplement the full-flow automatic filter with another high-performance technology – a special disc-stack centrifuge for removing particles from the oil flushed out of the filter, allowing the oil to be returned to the engine sump.