‌Medium-Efficiency Pocket Air Filter‌

Medium-efficiency pocket air filters are critical filtration components in central air conditioning systems and cleanrooms. Their core structure includes an aluminum alloy or galvanized steel frame, zinc-plated pressure bars, and non-woven/fiberglass filter pockets ‌. Pocket colors indicate efficiency grades: F5 (Orange), F6 (Green), F7 (Pink), F8 (Yellow) ‌. Operating on principles of interception, inertial impaction, diffusion, and electrostatic adsorption, they capture 1-5μm particles with 60%-95% filtration efficiency ‌

Core Features

1. ‌Performance Advantages‌

   • ‌High Dust Holding Capacity‌: Extends service life and reduces replacement frequency ‌
   • ‌Low Air Resistance Design‌: Lowers fan energy consumption for enhanced operational efficiency ‌
   • ‌Robust Construction‌: Aluminum alloy frame resists deformation and withstands high air pressure impacts ‌

2. ‌Primary Applications‌

   • Intermediate filtration in central AC systems (protecting HEPA filters) ‌
   • Purification systems for pharmaceutical workshops, electronics factories, and hospital operating rooms ‌
   • Commercial buildings (offices, shopping malls) for fresh air treatment ‌

3. ‌Usage & Maintenance‌

   • ‌Installation Requirement‌: Pocket openings must face vertically downward to ensure uniform airflow distribution ‌
   • ‌Replacement Cycle‌: Replace every 3-4 months or when resistance reaches 400Pa ‌
   • ‌Precaution‌: Requires pre-filtration with primary filters to prevent clogging by large particles ‌

Industry Comparison

Compared to ultra-micro electrostatic filters, pocket filters offer lower initial costs and superior dust holding capacity. However, electrostatic models provide advantages in sterilization and submicron particle (0.3-1μm) filtration ‌