Understanding Compressed Air Quality & Standards
Compressed Air System Quality Air

Compressed air quality is crucial in various industrial applications where compressed air is used. The quality of compressed air refers to its cleanliness, dryness, and absence of contaminants. It is essential to remove moisture, oil, and particulate matter from compressed air to ensure optimal performance and longevity of pneumatic systems and equipment. Contaminants can cause damage, corrosion, and compromise the efficiency of tools and machinery. To maintain high-quality compressed air, industries employ filtration, drying, and purification processes, adhering to specific standards to meet the requirements of their applications. Properly treated compressed air not only enhances the reliability of pneumatic systems but also contributes to product quality in industries such as manufacturing, pharmaceuticals, and electronics

Here are key aspects of compressed air quality that needs to be considered to ensure it meets the required standards for specific applications.

Key Aspects of Compressed Air Quality:

  • Contaminants in compressed air can include solid particles, oil, water vapor, and microorganisms. Solid particles can damage pneumatic equipment and affect the quality of end products in processes such as painting or electronics manufacturing. Oil in compressed air may result in equipment malfunctions, and water vapor can lead to corrosion and affect the performance of air-powered tools.
  • Moisture in compressed air can lead to corrosion, affect the performance of air tools, and contribute to the growth of microorganisms. Refrigerated or desiccant air dryers are commonly used to reduce the moisture content in compressed air, ensuring that it meets the required standards for specific applications.
  • ISO 8573-1 is an international standard that specifies the quality of compressed air in terms of purity and other key parameters. Titled “Compressed air — Part 1: Contaminants and purity classes,” it outlines the permissible levels of various contaminants present in compressed air, including particles, water, and oil. The standard divides contaminants into different classes, providing a numerical classification system for each type. This helps industries establish and maintain the desired quality of compressed air for their specific applications. ISO 8573-1 is widely used as a reference in the design, operation, and maintenance of compressed air systems to ensure they meet the necessary purity requirements for processes such as manufacturing, food and beverage production, and healthcare.