Pocket filters

We sell pocket air filters of all sizes from ISO Coarse >55% / G3 to ePM1 >85% / F9 efficiency classes according to the latest ISO 16980 standard.

 

Pocket G3 / ISO Coarse >55% - G4 / ISO Coarse >60% class filters can be used both as main filters and as pre-filters before M5 / ISO Coarse >85% - F9 / ePM1 >85% class filters; F7 / ePM1 >50-70% - F9 / ePM1 >85% class can also be used as pre-filters against H11 - H14 class HEPA filters.

 

Efficiency classes from G3/ISO Coarse >55% to F9/ePM1 >85%.

IN EN 779	G3	G4	M5	M6	F7	F8	F9
Eurovent	EU3	EU4	EU5	EU6	EU7	EU8	EU9
ISO 16980	ISO Coarse >55%	ISO Coarse >60%	ISO Coarse >85%	ISO ePM2,5 >50-60%	ISO ePM1 >50-70%	ISO ePM1   >70-80%	ISO ePM1 >85%

 

Structural peculiarities:

• Specific conical structure
• Vertical pocket projection is trapezium-shaped, while the vertical pocket projection is conical. Conical structure of filtering pocket affects airflow distribution inside the pocket and prevents pockets from sticking together during operation
• Filtering pockets are sewn using specific threads; holes formed after puncturing with needle are sealed with using hot adhesives

 

Frame of filter

Standard profile of frame is 25 mm width.  The frames of filters are from plastic or galvanize steel.

 

Filter material

Filter material is used in all pocket filters from class G3 / ISO Coarse >55% to class F9 / ePM1 >85%. Lower class filters (from G3 / ISO Coarse >55% to M6 / ePM2,5 >50-60%) have teaselled non-woven polyester materials with 8-20 µm fibre for coarse dust filter media. Such materials are coupled thermally and mechanically and charged electrostatically.

 

Higher class filter materials are applied fusion and blow technologies. This allows producing even thinner microfibres (1-10 µm) and thereby enlarge inner surface of filter medium.