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Resource center · CBS Air Compressors

Compressed Air Drying and Filtration

Learn about the drying and filtration processes needed to obtain clean, dry compressed air.

Discover what compressed air quality your process needs and which dryer-filter combinations are typically used.

Air quality ISO 8573-1
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Quality Calculator

Compressed air treatment selection

Before investing in your filters and dryers system, we recommend that you have these key points clear within your plant:

Uses of compressed air

Tools, actuators, bottle blowing, pneumatic conveying, valves, instrumentation.

Product contact

If the air touches the product or packaging, directly or indirectly (blowing, filling, sterile areas).

Cold areas / outdoors

Lines outdoors or in cold zones where condensation or freezing may occur.

Flow and pressure

Typical system flow and pressure, even if approximate values.

Quality requirements

Internal standards, HACCP, BRC, ISO and supplier specifications regarding air quality.

Fill in the fields and get a suggested air quality class and basic treatment configuration (filters + dryer) based on your application.

 

Important: This calculator is an initial guideline based on common good practices for air treatment. It does not replace a formal engineering design nor your internal plant standards.

Fill in the fields and click "Calculate recommendation" to see a suggested air treatment configuration.

Compressed air treatment configuration and ISO 8573-1 classes

Here you can see examples of air quality according to ISO 8573-1 and typical applications, along with a basic idea of a filter and dryer train.

AO configuration for oil-free and odorless air

ISO 8573-1 · Class 1.-.1

  • Oil penetration: ≤ 0.01 µm
  • Oil content: ≤ 0.01 mg/m³
  • Configuration: AO

Precision pneumatic tools, pneumatic instrumentation, sprayers, pneumatic motors, pneumatic conveying.

AO RSL configuration for dry air

ISO 8573-1 · Class 1.4.1

  • Oil penetration: ≤ 0.01 µm
  • Oil content: ≤ 0.03 mg/m³
  • Configuration: AO RSL

Tape manufacturing, valuable instruments and equipment, cosmetics, milk production, wine bottling.

RSXW(J) configuration for extremely dry air

ISO 8573-1 · Class 1.2.1 (Type A)

  • Oil penetration: ≤ 0.01 µm
  • Oil content: ≤ 0.01 mg/m³
  • Configuration: RSXW(J)

Injection molding, precision pneumatic instrumentation, advanced control valves.

RSXY configuration for extremely dry air

ISO 8573-1 · Class 1.2.1 (Type B)

  • Oil penetration: ≤ 0.01 µm
  • Oil content: ≤ 0.01 mg/m³
  • Configuration: RSXY

High-voltage insulation, powder conveying and drying, advanced sprayers, electric motor component processing, precise pneumatic measurement, package/film printing, textile machinery.

RSXB configuration for extremely dry air

ISO 8573-1 · Class 1.2.1 (Type C)

  • Oil penetration: ≤ 0.01 µm
  • Oil content: ≤ 0.01 mg/m³
  • Configuration: RSXB

High-voltage insulation, powder conveying and drying, advanced sprayers, electric motor component processing, precise pneumatic measurement, package/film printing, textile machinery.

RSC / AO AA ACS configuration for ultra-deep dry air

ISO 8573-1 · Class 1.1.1 (Type A)

  • Oil penetration: ≤ 0.01 µm
  • Oil content: ≤ 0.01 mg/m³
  • Configuration: RSC / AO AA ACS

High-precision sprayers, electrical industry, high-precision controls, aerospace, tape and chemical fiber manufacturing.

AA / AO AA AAR configuration for ultra-deep dry air

ISO 8573-1 · Class 1.1.1 (Type B)

  • Oil penetration: ≤ 0.01 µm
  • Oil content: ≤ 0.01 mg/m³
  • Configuration: AA / AO AA AAR

High-precision sprayers, electrical industry, high-precision controls, aerospace, tape and chemical fiber manufacturing.

Note: the configurations above are for reference only. You may adjust them according to actual conditions, flow, pressure, and internal or regulatory requirements.