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Coalescer Pre Filter

Efficient Removal of Oil Mist and Liquid Aerosols

APC Coalescer Prefilters are designed to remove liquid aerosols, oil mist, and fine droplets from air streams before they reach downstream filtration stages. Using specialized coalescing filter media, the filter captures small liquid particles and combines them into larger droplets that can easily drain away from the filter surface.

This filtration process improves the efficiency of the ventilation system and protects downstream filters such as fine filters, HEPA filters, or activated carbon filters from contamination. Coalescer prefilters are commonly used in environments where oil vapor, moisture, or liquid aerosols are present in the air stream.

Key Features

  • Effective removal of oil mist and liquid aerosols
  • High-performance coalescing filtration media
  • Low pressure drop for stable airflow
  • Helps protect downstream filtration systems
  • Durable construction for industrial environments
  • Suitable for continuous operation

Typical Applications

Coalescer Prefilters are widely used in:

  • Industrial ventilation systems
  • Compressor air intake systems
  • Oil mist filtration applications
  • Gas turbine air intake systems
  • Chemical processing plants
  • Food and pharmaceutical production facilities

These filters are typically installed as a pre-filtration stage before high-efficiency filters or gas-phase filtration systems.


Filtration Principle

Coalescing filter media works by capturing very fine liquid droplets suspended in the air stream. As the droplets accumulate within the filter fibers, they merge (coalesce) into larger droplets. Gravity then causes these droplets to drain away from the filter media, preventing saturation and maintaining stable filtration performance.

This mechanism allows the filter to efficiently remove oil aerosols, moisture, and other liquid contaminants from the air.


Construction Options

APC Coalescer Prefilters are available in different configurations to meet system requirements:

  • Filter Media: Coalescing microfiber or synthetic media
  • Frame Materials: Galvanized steel, aluminum, or stainless steel
  • Configuration: Panel or cartridge type designs
  • Efficiency: Designed for liquid aerosol removal and pre-filtration applications

Why Choose APC Coalescer Prefilters?

APC Coalescer Prefilters provide reliable protection for ventilation systems operating in environments where liquid aerosols or oil mist are present. By removing these contaminants at the pre-filtration stage, the filters help maintain stable airflow, improve system efficiency, and extend the service life of downstream filtration equipment.

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