Page 17 - Vira Filter Digital Catalouge

Pocket Filters

DESCRIPTION
Pocket filters are filters used in HVAC applications to remove dust
from ambient air. They are commonly used as final filters in
commercial applications or as prefilters for HEPA filters in hospitals
in the pharmaceutical industry.
Pocket filters were historically produced from glass fiber media,
however in recent years a shift to synthetic media took place.

Used in ventilation and air conditioning systems.
Fine filtering keeps airborne particles and aerosols.
Large filtration surface, high flow rate, low initial pressure drop.
Provides low operating costs.
Available in a variety of sizes.

Rated Advisable Recommended Initial Relative
Size Number Filter Class Average Efficiency Air Flow Cross Speed Final Pressure Drop Pressure Humidity Filter Area
(W*L*D) of Pockets ISO 16890 (%) ISO 16890 (%) 3 (m) 2
(m/h) (m/s) ISO 16890 (Pa) Drop (Pa) (%)
287*287*300 3 50-65 >60 450 1.0
287*592*300 4 50-65 >60 1000 1.5
70
592*592*600 6 50-65 >60 3400 4.2
592*592*600 8 50-65 >60 4500 5.5
287*287*300 3 50-65 60 450 1.0
287*592*300 4 50-65 60 1000 1.5
2.5 300 90 100
592*592*600 6 50-65 60 3400 4.2
592*592*600 8 50-65 60 4500 5.5
287*287*300 3 65-80 75 450 1.0
287*592*300 4 65-80 75 1000 1.5
100
592*592*600 6 65-80 75 3400 4.2
592*592*600 8 65-80 75 4500 5.5

M6-F7-F8
Pressure Drop (pa) 100
120
80
60
40
20
0
0 2 2.1 2.2 2.3 2.4
Face Velocity (m/s)
Rec.Final Average Average
Filter Filter Depth Pres.Drop Temp Filter Filter Arrestance Efficiency
Class Media (mm) (Pa) ( C) Frame Stage (%) (%)

M6-F7-F8 80-85-90

Synthetic 95-97-98

300-600 2-3

450 80 ABS-Metallic

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