Class 0

ISO 8573-1 for certified oil-free air

We are the world’s first compressor manufacturer to receive certification according to the latest edition of the industry standard of air purity: ISO 8573-1 CLASS 0 (2010).

Oil-free compressors

First in ISO 8573-1 (2010) Class zero

With Atlas Copco, you eliminate risks: no risk of contamination, of damaged or unsafe products, of losses from operational downtime or of jeopardizing your company’s well-earned reputation.

Top air purity for critical environments

Contamination by even the smallest quantities of oil can result in costly production downtime and product spoilage. Use our oil-free solutions for incomparable air purity.

The world prefers oil-free

Safeguard the environment and comply with international regulations with our oil-free air solutions, minimizing leaks and energy waste, and eliminating condensate treatment.

Lower you cost of ownership

You reduce your expenses with our oil-free technology in 4 ways:

  • no expensive filter replacements
  • no extra energy costs to combat pressure drop in filters 
  • lower maintenance costs 
  • lower costs of treating oily condensate

Class O is TÜV-tested

TÜV is an independent, international organization specializing in evaluating the safety and quality of technologies. The TÜV is recognized worldwide for its independence, neutrality, professional expertise and strict standards. Our oil-free air compressors underwent the most severe tests available.

All possible oil forms were measured across a range of temperatures and pressures but, because no traces of oil were found in the output air stream, our compressors surpassed TÜV’s stringent standards.

Meet the food & beverages top quality standard

We bring peace of mind to food & beverages customers. Our ISO 22000 certification for our oil-free production facility in Antwerp, Belgium, and the food safety management system applies to all our Z type class 0 oil-free air compressors and matching dryers and filters. Our Z compressors are made in a clean, safe environment and we have a documented transparent Food Safety Management System in place. Further support is provided by our ISO 22000 experts, who guide you in your process and assist you in any future updates.

Class 0 industries

Class 0 customer stories

Absolute class. Alsolutely class zero. Make decades of experience in oil-free compressed air for critical applications work for you


  • Customers prefer oil-free 682.5 kB, PDF
  • ZR 300-750_ZR 400-900 VSD _EN 4.9 MB, PDF
  • ZR/ZT 110-275(FF)_ZR/ZT 132-315 VSD (FF)_EN 5.3 MB, PDF
  • ZH 350+ (350 kW / 470 hp) 4.8 MB, PDF
  • ZH+ & ZH 355-900 (355-900 kW/500-1200 hp) and ZH+ & ZH 630-1600 (630-1600 kW/900-2250 hp) 5.3 MB, PDF
  • ZE/ZA 2-6 (1-4 bar(e)/14.5-58 psig) (30-522 kW/40-700 hp) 6.1 MB, PDF
  • ZD 800-1200 & ZD 1200 VSD air-cooled 1.3 MB, PDF
  • HX/HN Series (up to 560 kW / 750 hp) 1.8 MB, PDF
  • ZS 18-315 (18-315 kW / 24-422 hp) ZS 18-355 VSD (18-355 kW / 24-475 hp) 5.8 MB, PDF
  • ZB 100-250 VSD (100-250 kW/135-335 hp) 1.3 MB, PDF
  • P 37 - P 275 (25 to 40 bar - 37 to 275 kW) 1.3 MB, PDF
DX/DN oil-free reciprocating air and nitrogen boosters brochure
  • DX/DN oil-free reciprocating air and nitrogen boosters brochure 1.5 MB, PDF