Coarse Air Filter Manufacturer

1. Key control parameters for coarse air filter products include rated airflow, filtration efficiency at rated airflow, initial resistance at rated airflow, dust holding capacity, and dimensions.

2. According to the test method specified in JG/T22-1999 "Performance Test Method for Air Filters for General Ventilation," filters with an atmospheric dust counting efficiency of ≥20% and <80% for particles ≥5.0μm in diameter are classified as coarse air filters.

3. Commonly used filter media for coarse air filters include nylon weaving, glass fiber, and non-woven fabric.

4. Manufacturers should provide the dust holding capacity of the filter.

5. The initial resistance of a coarse air filter should be ≤50Pa. During design, twice the initial resistance can be used as the final resistance for calculating the filter's resistance.

6. Air filters should meet fire safety requirements, and the flash point of the filter coating should not be lower than 163℃.

7. When coarse air filters are used in air conditioning systems, washable and detachable types should be adopted. Cleaning cycles are typically 3-6 months.

Coarse Air Filter Manufacturers

1. Key control parameters for coarse air filters include rated airflow, filtration efficiency at rated airflow, initial resistance at rated airflow, dust holding capacity, and dimensions.

2. According to JG/T22-1999 "Performance Test Methods for Air Filters for General Ventilation," filters with an atmospheric dust counting efficiency ≥20% and <80% for particles ≥5.0μm in diameter are classified as coarse air filters.

3. Common filter media for coarse air filters include nylon weaving, glass fiber, and non-woven fabric.

4. Manufacturers should provide the filter's dust holding capacity.

Product Standards

GB/T14295-93 Air Filters

JG/T22-1999 Test Methods for Performance of Air Filters for General Ventilation

Engineering Standards

GB50073-2001 Cleanroom Design Code

GB50333-2002 Technical Specifications for Clean Operating Rooms in Hospitals