Oil-free air
HDW oil-free dry screw compressors
Oil-free dry screw compressors for applications where compressed air must contain no oil, certified to ISO 8573-1 Class 0.

Oil-free dry screw compressors for applications where compressed air must contain no oil. The series is certified to ISO 8573-1 Class 0 by a third-party body.
- ISO 8573-1 Class 0 certificate covers HDW-50A to HDW-355A (12 models, listed on this page).
- A second Class 0 certificate covers selected water-lubricated, scroll and blower models (HDW and HDS); see Certifications.
- Delivered 2024–2026 to steel and metals plants.
Specifications
Models listed on the Class 0 certificate
HDW-50A · HDW-75A · HDW-90A · HDW-110A · HDW-132A · HDW-160A · HDW-200A · HDW-220A · HDW-250A · HDW-280A · HDW-315A · HDW-355A
Flow, pressure and other specifications: Contact us for specifications.
Certificates
Certificates available on request.
Certificates are valid for the models and scope stated on the original documents. For the current certificate for a specific model, please contact us, or see Certifications.
Tell us your flow, pressure and air-quality requirement
We will come back with a suitable configuration and the specifications you need. We reply within 2 business days.