Advanced Compressed Air Filtration for Industrial Systems

Compressed air often contains solid particles, oil aerosols and contaminants that can negatively affect equipment performance, product quality and overall system reliability.

Friulair designs and manufactures a complete range of Compressed Air Filter solutions, engineered to ensure high-efficiency filtration, low pressure drop and long service life across all industrial applications.

Our portfolio includes advanced filtration systems designed to work in combination with Compressed Air Dryer technologies, ensuring complete compressed air treatment and compliance with ISO 8573 standards.

→ Discover the complete compressed air treatment system

The FB series includes aluminium filters and separators for compressed air systems, designed to efficiently remove particles and condensate.

  • Compact and lightweight design
  • Suitable for a wide range of industrial applications
  • Flow rate: 60 to 2,580 m³/h

Why Compressed Air Filtration Is Essential

Protecting equipment, processes and product quality

Without proper filtration, compressed air can carry contaminants that lead to:

  • Damage to pneumatic equipment and valves
  • Contamination of end products
  • Reduced efficiency of compressed air systems
  • Increased maintenance and operating costs

Installing the right Compressed Air Filter ensures clean and consistent air quality, while protecting downstream equipment and improving long-term system performance.

To achieve optimal results, filtration is typically combined with Compressed Air Dryers and condensate management systems.

→ Learn more about compressed air dryers

Separation

What Is a Compressed Air Filter?

How Compressed Air Filtration Works

A Compressed Air Filter removes contaminants from compressed air by passing it through filtration elements designed to capture particles, oil aerosols and vapours.

Depending on the filtration grade, compressed air filters can remove:

  • Solid particles (dust, rust, debris)
  • Oil aerosols
  • Oil vapours and odours
  • Condensate and moisture

Different filtration stages are typically used in sequence to achieve the required air quality according to ISO 8573 standards.

Diagram of compressed air filter removing solid particles, oil aerosols, oil vapours and condensate to produce clean compressed air

Filtration Grades and Air Quality

Selecting the Right Filtration Level

Compressed air filters are available with different filtration grades depending on the required air quality.

Typical filtration stages include:

  • Pre-filtration → removal of large particles and condensate
  • Fine filtration → removal of smaller particles and oil aerosols
  • Activated carbon filtration → removal of oil vapours and odours

The correct combination of filters ensures compliance with ISO 8573 air quality classes.

Compressed Air Filters in a Complete Air Treatment System

Integration with Dryers and Separators

Compressed air filtration is never a standalone process. Filters are typically installed:

  • Upstream of Compressed Air Dryers to protect the system
  • Downstream of dryers to ensure final air quality
  • In combination with condensate separators and drains

This integrated approach guarantees clean, dry and efficient compressed air.

Complete compressed air treatment system including compressor, aftercooler, filters, separators and dryers ensuring clean and dry air

How to Choose the Right Compressed Air Filter

Key Selection Criteria

Selecting the correct Compressed Air Filter depends on:

  • Required air quality (ISO 8573 class)
  • Flow rate and operating pressure
  • Type of contaminants present
  • Application sensitivity

Friulair specialists support customers in selecting the most suitable filtration configuration, ensuring optimal performance and system protection.

→ Learn more about compressed air quality and system selection

Frequently Asked Questions

A Compressed Air Filter removes contaminants such as particles, oil aerosols and vapours from compressed air. These contaminants can damage equipment, reduce efficiency and affect product quality.

Proper filtration ensures clean and reliable compressed air, improving both system performance and operational safety.

Separation

Discover the right filtration solution for your application

Friulair experts are ready to help you select the most efficient Compressed Air Filter solution tailored to your needs.