Pocket filters and EX Protect filters

Pocket filter

Pocket filters are used in HVAC applications as pre-filters, medium filters and final filters, depending on the type of pocket filter and the filter material in question.

Pocket filter frames are generally made of plastic or galvanised steel and are 25 mm in thickness. The filtration medium may be synthetic fibre/PES or a combination of PP and PES. Pocket filters can be used to remove both larger dust particles and fine particles, and are even effective as pre-filters for clean room filtration systems.

Pocket filters are typified by small size, variety of surface type, and wide choice of model. Thanks to their structure and incorporated filter media, they have a high dust retention capacity. One of their most important features is the number of pockets, which generally ranges between 5 and 12. The filtration surface grows with the number of pockets, and may even exceed 10 m².

Pocket filters

In the standard-sized pocket filters commonly used in industry, the pockets are stitched or welded to provide spacing. Besides the usual sizes, filters may also be produced and purchased in unique sizes.


Properties of pocket filter products:

Filter material: synthetic fibre/PES or a combination of PP and PES. 
Structure: single orientation installation
Filter classes: G2, G3, G4, F5, F6, F7, F8, F9
Maximum temperature: 80 °C

Main fields of use:

» pharmaceutical works
» food processing facilities
» electronics plants
» IT centres
» swimming pools, hotels, schools
» industrial halls
» pre-filters for paint cabins
» as a pre-filter for HEPA filters


EX PROTECT filters – explosion-proof pocket filters

explosion-proof pocket filterExplosion proof pocket filters (EX PROTECT filters) are pre-filters and fine-filters used in the HVAC systems of premises, buildings and halls where there is risk of explosion, such as gas distribution centres, chemical laboratories, chemical plants and pharmaceutical works.

Frames for these filters are made of galvanised metal, filtration being done by a mixture of metal fibres and synthetic material. In today's modern options, the filter textile itself comprises several layers, with pre-filter, fine filter and nonwoven components. This combination of filter textiles ensures a small pressure drop and a high dust retention capacity.

The synthetic layer mixed with metal fibres causes the filter to become electrostatically charged, so the appliance is earthed via the filter housing,either with an earthing lead, an earthing pin or through the frame.

Our filters are both ATEX certified for explosive atmospheres
nd TÜV certified in accordance with Directive 94/9/EC.


Properties of explosion proof pocket filters:

Filter material: a mixture of metal fibres and synthetic material
Structure: prepared for grounding
Filter classes: G4, F5, F6, F7, F8, F9
Maximum temperature: 80 °C

Main fields of use:

» chemical plants
» gas distribution centres
» chemical laboratories
» pharmaceutical works
» surface treatment cabins and halls

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Indufil PLC. stocks the quantities of filters and accessories required for synchronisation with our partners' production needs. We can deliver in accordance with predetermined schedules or just-in-time. Besides filter logistics, we also provide maintenance, certification and measurement services.

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Our team of experts has many years of experience in the replacment, collection, transportation, cleaning and disposal of used filter cartridges.


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