Air dryer cartridges from the global market leader

Bead-shaped desiccant

In all three versions, MANN-FILTER relies on an open-pore desiccant with high drying performance that is also used as original equipment. With its large active surface, it adsorbs large quantities of water while remaining mechanically stable. Thanks to its great adsorption capacity under pressure, the desiccant can optimally adsorb and bind the air humidity that has penetrated the system. One gram of desiccant has an active surface area of up to 700 square meters. An average truck uses about one kilogram of desiccant, which corresponds to an area of around 100 soccer pitches.

Virtually the only manufacturer of double-layer technology worldwide

MANN+HUMMEL is virtually the only manufacturer in the world that uses so-called double-layer technology for its air dryer cartridges. This technology is based on the positive properties of two different desiccant layers with different moisture absorption capacities. It consists of a layer of water-stable silica gel and a molecular screen layer. This combination improves the drying performance by making optimal use of the respective absorption capacities and provides additional protection against sudden water penetration caused by condensation. The excellent adsorption properties of the individual layers are specially adapted to the varying humidity levels along the direction of flow.

High levels of component strength and corrosion protection

MANN+HUMMEL uses high-quality steel from renowned manufacturers for its screw-on and spin-on cartridges. This results in a robust component with high pulsation and burst pressure resistance as well as comprehensive corrosion protection. Air dryer cartridges are exposed to high pressures and frequent changes in pressure, with all the associated mechanical loads. All components are therefore manufactured exclusively from materials that have successfully passed MANN+HUMMEL's demanding tests and approval processes. MANN-FILTER products are subjected to the same stringent approval tests as original equipment parts.

Coalescing filter separates the smallest oil droplets

The silver and gold air dryer cartridges both have a coalescing filter that effectively retains fine oil droplets – in addition to the standard drying and particle filtration functions. The smallest oil droplets are merged to form large droplets and effectively filtered from the compressed-air system. This extends the service life of the compressed-air and brake system components, reduces service costs and shortens downtimes.

Innovative strength

MANN+HUMMEL has been granted several patents by the German Patent and Trademark Office as well as offices in other countries for the premium cartridge technology. This solution is one of the filtration expert’s more than one hundred patent applications each year, with a patent pool of over 4,600 patents. Under the MANN-FILTER brand, customers on the independent aftermarket benefit from this innovation in the usual original equipment quality.

Regular replacement is pivotal

Like any other filter, the air dryer cartridge must be replaced regularly in line with the replacement intervals specified by the vehicle manufacturer. Upgrading a standard cartridge to a cartridge with a coalescing filter is easy and improves the protection of systems operated with compressed air – especially the brake system – using basic means.

Always the right solution

With 15 different air dryer cartridges in original equipment quality, MANN-FILTER offers solutions for 98 percent of the existing truck and bus fleet in Europe.