New MANN-FILTER PreLine 270 and 420 available from dealers from autumn 2012

Improved concept for fuel prefilters

The new MANN-FILTER PreLine 270 and 420 fuel prefilter systems for diesel injection systems provide more performance and servicing advantages. They effectively separate both water and particles and are intended for retrofitting in trucks and buses. The new MANN-FILTER products will be available from dealers from November 2012.

Ludwigsburg, 11th September 2012 – The new PreLine 270 and PreLine 420 fuel prefilters from MANN+HUMMEL for diesel injection systems will be available under the MANN-FILTER brand name from dealers in original equipment quality from November 2012 onwards. The new PreLine units have a new filter head with improved pump function and offer less flow restriction thanks to a larger connecting thread. The fuel prefilters separate 30% of extremely fine particles measuring six microns and over 93% of water (in compliance with ISO 4020). When it is delivered, the filter element is not placed firmly over the filter head in order to make it easier to fit. In addition, an optimised sealing material is supplied to reduce tightening and release torques.                

As an option, a new heater (DH 32 KIT) is available. It is equipped with an HDSCS connector which flexibly covers the voltage range from 9 to 32 volts usually supplied by vehicle on-board electrical systems. The heater is easy to retrofit. A set of five metre long cables is available as accessory.

The PreLine system increases filtration performance and extends the service life of the main filter. It protects the pre-supply pump against damage such as abrasion or corrosion caused by water in the diesel fuel.

MANN+HUMMEL uses the high-performance filter medium MULTIGRADE F_PFO in PreLine systems bearing the MANN-FILTER brand name. PreLine achieves up to 50% more water separation than systems using standard media. In the PreLine 270 and 420, extremely fine synthetic fibres with a diameter of one to three microns are intended to efficiently preseparate particles on the flow side. Another extremely fine filter layer removes the remaining particles almost completely. In addition, the ultra-fine synthetic fibres of the MULTIGRADE are designed to remain highly stable in order to separate water over the entire service life of the prefilter.

Under the filter a tank with a maximum capacity of 0.5 litre collects the separated water. The water is normally drained off during servicing when the spin-on filter is replaced or if there is a risk of frost. A special release tool is available to replace the tank. As a series option, MANN+HUMMEL can supply a semi-active water sensor to monitor the level in the water tank. It is temperature-resistant from –30 to +110 degrees Celsius.

The filtering capability and the service interval for the prefilter are matched to the requirements of the main filter. The PreLine system supplements the function of the main filter.

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The MANN+HUMMEL Group is a leading global expert for filtration solutions and development partner and original equipment supplier to the international automotive and mechanical engineering industries. Employing 14,338 people at more than 50 locations worldwide, the company achieved turnover of about 2.5 billion euros in 2011. The group’s product portfolio includes air filter systems, intake manifold systems, liquid filter systems, cabin filters and cylinder head covers made of plastic with many integrated functions for the automotive industry, as well as filter elements for vehicle servicing and repair. For general engineering, process engineering and industrial manufacturing sectors the company’s product range includes industrial filters, a series of products to reduce carbon emission levels in diesel engines, membrane filters for water filtration and filter systems.