China G3 GL Frame Replaceable Panel Pre-Air Filter - High Efficiency Suppliers & Factory
Application Area
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Wide Industry Coverage
Replaceable Pre-filters are widely used in Clean rooms, commercial and industrial air conditioning and ventilation systems, central air conditioning, and other related industries.
Filter Media Materials
The filter media is the part that actually performs the filtration. Common types include:
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Metal Mesh
Characteristics: Typically aluminum or stainless steel mesh; washable, reusable, with good durability.
Used in situations requiring higher standards and reusable, but the cost is higher than that of paper media.
Used in situations requiring higher standards and reusable, but the cost is higher than that of paper media.
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Synthetic Fiber
Characteristics: This is currently the most mainstream and common filter media. It is usually a non-woven fabric made from polyester fiber.
Advantages: The fibers are fluffy with uniform gaps, providing high dust-holding capacity; relatively low resistance; possesses a certain stiffness, allowing it to be self-supporting (used with a cross-sectional design, see the structure section below).
Form: The surface is usually pleated to create an uneven texture, increasing the filtration area and reducing resistance.
Advantages: The fibers are fluffy with uniform gaps, providing high dust-holding capacity; relatively low resistance; possesses a certain stiffness, allowing it to be self-supporting (used with a cross-sectional design, see the structure section below).
Form: The surface is usually pleated to create an uneven texture, increasing the filtration area and reducing resistance.
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Glass Fiber
Characteristics: Now less commonly used in primary filters and more frequently used in medium-efficiency filters. It offers stable performance but is relatively brittle.
The Efficiency of Replaceable Pre Filter
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Efficiency Range: 40% – 90%
The efficiency of currently available primary efficiency filters ranges from 40% to 90%, and they can be selected based on specific requirements. The rational selection of filter efficiency and face velocity contributes to comprehensive economic benefits.
For filters made of the same material, higher efficiency typically results in greater resistance and higher cost, while lower efficiency leads to reduced resistance and cost. Altering the air velocity will also affect resistance, efficiency, and the number of filters required, so appropriate selection should be made according to specific conditions.
Service Life of Filters
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When to Replace Your Filter
As dust accumulates on the filter media, the resistance increases. When the resistance reaches an unreasonable level, the filter must be discarded. Sometimes, excessive resistance can cause previously captured dust to become dislodged and re-enter the airflow; when this risk arises, the filter should also be replaced.
The resistance of a filter increases with higher airflow rates. By increasing the surface area of the filter media, the relative velocity of air passing through the filter can be reduced, thereby decreasing the resistance.
Wind Speed Relationship Diagram
Product Parameters
📌 Remarks: (1) Initial resistance tolerance of ± 10% (2) Support customer size
Frequently Asked Questions (FAQ)
What industries are Replaceable Pre-filters suitable for?
Replaceable Pre-filters are suitable for a wide range of industries, including clean rooms, commercial and industrial air conditioning systems, central air conditioning systems, and other ventilation-related applications.
What filter media materials are available for Replaceable Pre-filters?
The most common filter media materials include Metal Mesh (aluminum or stainless steel, washable and reusable), Synthetic Fiber (polyester non-woven fabric, the most mainstream option), and Glass Fiber (stable performance, now more commonly used in medium-efficiency filters).
What is the filtration efficiency range of Replaceable Pre-filters?
The filtration efficiency of primary efficiency (pre) filters typically ranges from 40% to 90%. The appropriate efficiency level can be selected based on your specific application requirements and economic considerations.
How does air velocity affect filter performance?
Higher air velocity increases filter resistance, which can reduce efficiency and shorten service life. By increasing the surface area of the filter media, the relative air velocity through the filter is reduced, helping to lower resistance and extend the filter's working life.
When should a Replaceable Pre-filter be replaced?
A pre-filter should be replaced when the accumulated dust causes resistance to reach an unreasonable level, or when excessive resistance risks dislodging previously captured dust back into the airflow. Regular monitoring of resistance levels is recommended to determine the optimal replacement time.
Can Replaceable Pre-filters be customized in size?
Yes, custom sizes are supported to meet different installation and system requirements. Please refer to the product parameters or contact the supplier directly for customization options. Note that the initial resistance tolerance is ± 10%.