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Bag & Pocket Pre Air Filter

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Bag & Pocket Pre Air Filter

A cleanroom pocket type pre air filter is a type of air filter that is designed for use in cleanrooms and other controlled environments. Bag filters are air pollutant filtration equipment used in air handling cabinets, air conditioning systems, public places, and also as pre-filters in clean rooms and the pharmaceutical industry. It is mainly used to filter and remove dust particles ≥5μm in air conditioning systems. These filters are typically made from materials such as polyester or polypropylene, which are effective at trapping large particles from the air. Cleanroom pocket type pre air filters are designed to be inserted into pockets or bags that are installed in the ceiling or walls of a cleanroom. The bag-type air filter has 3-12 parallel bags, and the bag depth is generally 250~900mm. Ultrasonic welding between individual bags. Such a process ensures that the airflow can pass through the entire filter more efficiently and the dust is efficiently loaded and evenly distributed. This extends filter life and reduces energy costs. And a grid can be arranged in the inner bag of the filter to effectively increase the filtering area. They are commonly used in low to medium-efficiency cleanrooms, and they are regularly replaced to ensure that they continue to effectively remove contaminants from the air. Pocket type pre air filters are typically used in conjunction with other types of cleanroom filters, such as panel filters or ceiling filters, to provide multiple levels of filtration and ensure the cleanliness of the air in the cleanroom.

Youth’s bag air filters are designed to be used in primary/mid-stage/high-stage air filtration equipment. Extended Surface Unsupported Bag Filters are designed for use in air filtration systems and equipment requiring medium to high efficiency filtration. Youth is available in a variety of standard sizes, face sizes, pocket counts and depths to provide optimum performance in a constant airflow air handling system.

Class EN779G3G4M5M6
Arrestance EN779 [%]>86%>91%>96%>98%
Efficiency EN779 [%]>25%>35%>55%>65%
Initial-ΔP [Pa] at nominal airflow30354550



Dimensions [mm]Nominal airflow [m³/h]Pockets quantity
WidthHeightDepth 200 [mm]Depth 360 [mm]Depth 500 [mm]
BF592592D-E (G3/G4)5925921900340047006
BF287592D-E (G3/G4)4905921600280040005
BF287287D-E (G3/G4)287592900170023003
BF592592D-E (M5/M6)28728750095013003
BF287592D-E (M5/M6)5928922700490060006
BF287287D-E (M5/M6)2878921400240030003
Bag Air Filter Customized Available from 1-12.

What is Different Between a Bag or Pocket Air Filter?

Bag air filters and pocket air filters are both types of air filters that are commonly used in cleanrooms and other specialized environments. While both types of filters are designed to remove particles and contaminants from the air, there are some key differences between them.

One of the main differences between bag air filters and pocket air filters is their construction. Bag air filters are typically made by enclosing a filter media, such as fiberglass or synthetic fibers, within a perforated metal or plastic frame. The frame is then sealed with a plastic or rubber gasket to prevent air leakage. In contrast, pocket air filters are made by enclosing the filter media within a series of pockets or compartments that are sewn or welded together.

Another key difference between bag air filters and pocket air filters is their performance. Bag air filters typically have a lower initial resistance and a higher dirt holding capacity than pocket air filters, which means they can remove more particles from the air while still allowing air to flow through the filter. Pocket air filters, on the other hand, typically have a higher initial resistance and a lower dirt holding capacity, which means they are more effective at removing smaller particles from the air but may restrict air flow more than bag air filters.

When choosing between a bag air filter and a pocket air filter, it is important to consider the specific requirements of your application. For example, if you need a filter that can remove a large amount of particles from the air while still allowing air to flow through the filter, a bag air filter may be the better choice. If you need a filter that can remove smaller particles more effectively, a pocket air filter may be a better option. By carefully evaluating your needs, you can determine the right type of air filter for your application.

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