F9 Combined Air Filter Cartridge

F9 Combined Air Filter Cartridge

Core Positioning

This industrial-grade combined filter cartridge is professionally developed and manufactured, fully tested in accordance with the EN779:2012 European standard, achieving an F9 filtration grade. Featuring synthetic fiber media and a canister-style structure, it is designed for efficient dust removal in industrial combustion engines, ventilation systems, and other heavy-duty applications. It delivers high filtration efficiency, large dust-holding capacity, and stable pressure drop performance, providing reliable air purification for industrial operations.

Key Performance Advantages

High-Standard Filtration Efficiency for Full Particle Size Range

The initial filtration efficiency for 0.4μm particles is 82.1%, increasing to average efficiencies of 95.9%, 97.3%, and 97.8% at final pressure drops of 250Pa, 350Pa, and 450Pa respectively. It effectively intercepts particles across 0.2–3.0μm, with efficiency exceeding 98.7% for particles larger than 1.0μm, and reaching 94.9% for 0.2–0.3μm fine particles at 450Pa final pressure drop, fully meeting industrial precision filtration requirements.

Extra-Large Dust-Holding Capacity for Extended Service Life

Under EN779:2012 test conditions, the tested dust-holding capacities reach 1120g (250Pa), 1774g (350Pa), and 2320g (450Pa) at respective final pressure drops. This large capacity significantly reduces filter replacement frequency, lowering maintenance costs and downtime for industrial production.

Stable Pressure Drop for Continuous System Operation

The initial pressure drop of the clean filter cartridge is only 158Pa. Under rated test airflow, the pressure rises steadily to 250Pa, 350Pa, and 450Pa during dust loading without sudden fluctuations. The pressure drop of the clean cartridge maintains a reasonable proportional relationship with airflow, ensuring continuous, stable operation of industrial ventilation and combustion engine equipment without additional energy consumption.

Superior Dust Capture Rate for Effective Dust Control

The overall dust capture rate remains above 99% throughout all test phases, efficiently capturing airborne dust particles to minimize equipment wear, environmental pollution, and particulate emissions, protecting both machinery and meeting environmental production standards.

Core Specifications

Filtration Grade: F9 (compliant with EN779:2012)

Media Type: Synthetic Fiber

Effective Filtration Area: 35.5㎡

Filter Cartridge Dimensions: 324660 + 44560mm

Test Airflow: 0.694m³/s (rated), 0.944m³/s (performance test)

Initial Pressure Drop: 158Pa

Optional Final Pressure Drop: 250Pa / 350Pa / 450Pa

Tested Dust-Holding Capacity: 1120g (250Pa) / 1774g (350Pa) / 2320g (450Pa)

Initial 0.4μm Efficiency: 82.1%

Average 0.4μm Efficiency: 95.9% (250Pa) / 97.3% (350Pa) / 97.8% (450Pa)

Overall Capture Rate: >99%

Structure: Canister-style combined filter cartridge

Test Aerosol: DEHS

Loading Dust: ASHRAE standard dust

Applications

With its superior filtration performance, large dust-holding capacity, and stable operational characteristics, this F9 combined filter cartridge is widely used in industrial combustion engine air filtration, factory ventilation and dust removal systems, painting workshops, chemical production, and construction machinery—ideal for high-filtering-grade, high-dust-concentration industrial environments and compatible with various industrial dust removal equipment upgrades and matching.