SAF Series

The SAF Series compressed air filters reduce contamination in your air stream to help protect critical processes and valuable equipment.  Each microfilter housing comes equipped with an internal float drain and a differential pressure indicator.

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Super-Dry SAF Series Compressed Air Filters Buying Guide

How to Choose the Right Compressed Air Filter

A compressed air filter protects your compressed air system by removing contaminants that can damage equipment, reduce product quality, and shorten the life of downstream air treatment components. Selecting the correct filter depends on airflow (SCFM), connection size, operating pressure, and the contaminants that must be removed.

What Should You Consider?

  • Air Flow (SCFM): Select a filter rated at or above your compressor's maximum airflow.
  • Connection Size: Match the filter port size to your piping whenever practical.
  • Operating Pressure: Verify the filter is rated for your system pressure.
  • Filter Grade: Choose Grade X, Y or Z based on the contaminants you need to remove.
  • Future Expansion: Select the next larger model if additional airflow is expected.

  • Where Should a Compressed Air Filter Be Installed?

    Install filters after the receiver tank and bulk water separator whenever possible. For the highest air quality, the recommended sequence is Water Separator → Grade X → Grade Y → Desiccant Air Dryer → Grade Z.

  • Why Install Compressed Air Filters?

    • Protect valves, cylinders and pneumatic tools
    • Remove rust, dirt and pipe scale
    • Reduce oil aerosols reaching downstream equipment
    • Extend desiccant dryer life
    • Improve paint quality and process reliability
    • Reduce maintenance costs and downtime

Understanding SAF Filter Grades

Different applications require different levels of filtration. Super-Dry offers three filtration grades designed to work together for complete compressed air treatment.

Grade Removes Performance Typical Applications
Grade X Solid particles 1.0 micron General industrial protection
Grade Y Fine particles & oil aerosols 0.01 micron Paint booths, instrumentation, CNC, automation
Grade Z Oil vapours, odours & taste Residual oil content down to 0.003 ppm Food & beverage, pharmaceutical, laboratories, electronics

Grade Z activated carbon filters should be installed after a Grade Y coalescing filter. They are designed to remove oil vapours, odours and taste—not bulk liquid oil.

Need Help Selecting a Filter?

Contact the Super-Dry technical team with your compressor size, operating pressure and application. We'll recommend the correct SAF Series model and filtration grade.

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Frequently Asked Questions

What does a compressed air filter do?

It removes solid contaminants and, depending on the grade, oil aerosols and oil vapours from compressed air.

What is the difference between Grade X, Grade Y and Grade Z?

Grade X removes 1.0 micron particles. Grade Y removes 0.01 micron particles and oil aerosols. Grade Z uses activated carbon to remove oil vapours, odours and taste, achieving residual oil content down to 0.003 ppm.

Do I need a water separator before the filter?

Yes. Removing bulk liquid water first extends filter element life and improves filtration performance.

Can a compressed air filter remove water vapour?

No. Water vapour requires a desiccant air dryer.

Can Grade Z replace Grade Y?

No. Grade Z is intended as a final polishing filter and should always be installed after a Grade Y filter.

How do I choose the correct filter size?

Select the model based on maximum SCFM, connection size and operating pressure.

How often should the filter element be replaced?

Replace elements based on maintenance intervals, contamination levels or increased pressure drop.

Why is pressure drop important?

Excessive pressure drop wastes energy and reduces compressed air system efficiency.

Where should compressed air filters be installed?

After the water separator and before sensitive equipment or point-of-use applications.

Why choose Super-Dry SAF filters?

Industrial aluminum construction, low pressure drop, replaceable elements, multiple filtration grades and compatibility with Super-Dry moisture removal products.