In gasoline engines it is mandatory to install a filter according to international regulations, which is more restrictive with diesel fuel engines. In these last ones, the function of the filter is double, on one hand it must prevent the access of solid particles to the engine and, on another hand, it should avoid that the water passes to the combustion chamber. This dual function is developed by the water and fuel separator filter.
What is it?
A water separator filter is a diesel engine and injectors protection system. This device is not exclusive to recreational boats and commercials ships, but is also installed in large motor vehicles of road vehicles.
How does it work?
The filter has several parts, depending on whether it fulfills the dual function of filtering the solid particles or only decants the water contained in the fuel. Usually the same device runs both tasks. Thus a filter of paper or similar material with a minimum porosity is different to capture the solid particles that barely measure a few microns and a second chamber where the water separates.
The process by which the fuel is separated from the water differs according to the manufacturer. Some choose to subject the liquid to centrifugal pressure and others are based on decantation. Whatever is achieved is that the water, denser than the fuel, is placed on a lower bowl (opaque or transparent) where you can drain the liquid through a key.
The probability of water in the fuel is actually minimal, but it can be caused by contamination during transport, storage in port or in the tanks of the ship itself due to condensation.
Do you need a water separator filter? Visit our Griffin Fuel Filters section at the Baitra Store.