Freudenberg Filtration Technologies

Freudenberg Filtration Technologies
Air Filtration

Depth-loading Filter Cartridges

Viledon depth-loading cartridges are used in supply air filtration systems for turbomachinery both on and off-shore. They are particularly successful, whenever the cleaning of surface-loading filter cartridges does not produce any effective reduction in pressure drop, because the dust concentrations are too low and/or the dusts concerned are too sticky and/or the air inlet is a non pulse system fitted with cartridges.

In the latest depth-loading filter cartridges generation, which is the GTG series of filter class F9 in broad conformity with EN 779, the filter medium consists of an innovative high-strength synthetic micro-glass-fiber nonwoven with uniform pleat spacing for maximum dust holding capacity. The water-repellent coating of the fibers allows the cartridge to maintain excellent operational characteristics in all climatic conditions.

In conjunction with the rigid construction of the pleat pack this medium achieves high particle arrestance, high dust holding capacity and low pressure drops. Thanks to the high stability of the pleat geometry, the pleats will not collapse even at high pressure drops. Viledon depth-loading filter cartridges provide an optimized ratio between filtering area, pleat depth and number of pleats. They are 100% moisture-resistant, and temperature-resistant up to 70°C.

EN 779*

Depth-Loading
 Filter Cartridges 

Average Arrestance

Average Efficiency

> 99 %

98 %

GTG 324-445 W 66S0-Set

-

-

GTG 445 K66S0

> 99.9 %

98 %

GTG 324 W66S0

* Contrary to the standard, the cartridge is installed in the test channel using an adapter, which fits the cylindrical cartridge into the rectangular test channel. Test volume flow rate 1,100 m³/h, dust load 200 g, final pressure drop 800 Pa.

Other versions are available upon request.

Special feature: Viledon depth-loading filter cartridges provide troublefree performance also under critical environmental conditions. Empirical feedback from actual installations has shown that even at low temperatures and simultaneous high humidity there is neither any significant increase in pressure drop nor any ice blocking (Performance of TFP 60 operated in a turbomachine).