Medium Filter
Medium-effect filters belong to F series filters in air filters, mainly including bagged and non-bagged types to meet different air purification needs. Specifically, bag-type intermediate-effect filters include F5, F6, F7, F8, F9 and other levels, while non-bag-type intermediate-effect filters include FB (plate-type intermediate-effect filters), FS (spacer-type intermediate-effect filters) and FV (combined intermediate-effect filters).

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Application industry
It is mainly used in the intermediate filtration of central air-conditioning ventilation system, pharmaceuticals, hospitals, electronics, food, and other industrial purification;
It can also be used as the front-end filtration of high-efficiency filtration to reduce the load of high-efficiency filtration and prolong its service life;
Due to the large windward surface, it has a large amount of empty dust and low wind speed, and is considered to be the best structure of intermediate-effect filter.
Product features
Capture particulate dust of 1-5μm and various suspended matters.
Adopting hot melting process to stabilize the structure and reduce the risk of leakage.
High airflow.
Low resistance.
High dust holding capacity.
Can be cleaned and used repeatedly.
Type: Frameless type and framed bag type.
Filter material: special non-woven fabric or glass fiber.
Efficiency: 60%~95%@1~5μm (colorimetric method).
Maximum operating temperature and humidity: 80℃, 80%.
Replacement cycle
Under the condition of rated airflow usage, the filter needs to be replaced in 3~4 months;
When the resistance of the filter reaches 400Pa or more, the filter must be replaced;
If the filter uses washable filter media, the replaced filter media can be rinsed with water or solution containing neutral detergent, cooled and dried, and then replaced; at most, the filter can be cleaned for two times, i.e., it must be replaced with a new one;
If the dust concentration in the environment is large, this life cycle will be reduced.
Bag-type medium-effect filter filtration efficiency:
F5 to F9 grade: Bag type medium-effect filters can effectively filter particles with diameters in the range of 1-10 microns, including dust, pollen, mold, bacteria, etc., through the bag structure composed of multi-layer filter materials, providing high filtration efficiency and suitable for environments requiring high air purification.
Non-bag type medium efficiency filter:
FB (Plate-type medium-effect filter): Plate-type medium-effect filter is composed of flat plate filter material, applicable to medium-effect filtration requirements in ventilation and air-conditioning systems, which can effectively reduce particles in the air and provide good filtration effect.
FS (spacer-type medium-effect filter): the spacer-type medium-effect filter adopts filter materials arranged at intervals in a spacer, which has a simple and compact structure, is suitable for installation environments with limited space, and has better filtration efficiency and performance stability.
FV (Combination medium-effect filter): Combination medium-effect filter combines different types of filter media and structural design to provide more comprehensive air filtration effect, and is suitable for places with higher requirements on air quality.
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