The company says the manual pump on the clean side enables the filter to also provide more security for applications with a low fuel quality. In addition, after servicing the filter system can now be filled up again much more quickly.The company adds that even with poor fuel quality the filter system stays fully functional. Therefore the filter head is particularly suitable for applications in countries where the diesel fuel is more contaminated with water and particles.The filter head is designed for nominal flow rates of 270 to 600 litres per hour.The PreLine prefilter for diesel fuel separates course particles and water and is said to extend the service life of the main filter. This prevents engine wear and wear to sensitive injection system components. The complete PreLine series includes seven sizes for nominal flow rates from 50 to 600 litres per hour.