Lube oil filter – 350 series Continuously automatic backflushing lube oil filter Application The automatic filter 350 is designed specifically for full-flow filtration of lubricating oil used in large engines that burn all types of fuels (distillate, Gas, DO, bio-fuels and HFO) dedicated to high capacities. The 350 is intended for protection of: – Main lubrication system on crosshead and trunk piston engines – Servo or control oil systems in crosshead engines The 350 requires minimal investment yet delivers: – Highly reliable operation with minimal running costs – True peace of mind Unique features  Robust disc-type filter elements  Constant pressure drop across the filter  Backflushing process driven by filtered oil  Compact and simple design  Suitable for combination with backflushing cleaning by a centrifugal separator, such as the Alfa Laval Eliminator  Optional integrated backflushing treatment system: Diversion Chamber Key benefits  Simple design – Few components make maintenance easy and operating costs low  Environmentally friendly – Minimal oil loss, extended oil life time and no disposal items  Durable – Robust design reduces the risk of the filter element cracking  Easy maintenance – Continuous backflushing prevents adhesion of retained solids to the filter surfaces, which results in: – No manual cleaning of the filter elements – Low and constant pressure drop across the filter elements, which further reduces the risk of cracking  Easy to troubleshoot – Constant pressure drop across the filter, combined with the pressure drop indicator, facilitates the detection of a malfunction in the lube oil system Alfa Laval lube oil filter 350  Self-sufficient – Use of filtered oil for the backflushing process eliminates the need for auxiliaries power (no air or electricity required)  Constant pressurized flow – Combination with a back flushing treatment system, such as a centrifuge or diversion chamber, is possible  No need for a sludge treatment unit – The diversion chamber collects the particles backflushed from the full-flow chamber and cleans itself to concentrate sludge, acting as an auto matic and maintenance-free sludge treatment system. This eliminates the nee

Working principle Overview The oil to be filtered is pumped from the lube oil sump through the filter and to the engine. When the oil reaches the filter, it first passes through a strainer located in the inlet body. This removes any large foreign particles, such as pieces of rags. Once past the strainer, the oil then passes through the fullflow filter elements, which trap solids, and onwards to the engine. A small amount of the filtered oil (3 to 5% of the flow to the filter) is used to backflush part of the full-flow filter elements and to drive the hydraulic motor. The backflushed oil with...

Arrangement of full-flow elements. Other Alfa Laval filtration products Alfa Laval manufactures filters for other engine room applications, such as automatic filters both with and without diversion chambers for lubricating oil and fuel oil, and manual and bypass filters. Alfa Laval also manufactures centrifuges to fit selfcleaning filters. Technical data Flow capacity Filter finess Max. filter inlet pressure Max. temperature in the filter Housing material Service and support Replacement components and service are provided through a network of Alfa Laval subsidiaries and representatives worldwide,...