Product features of dual-stage compression PM VFD screw air compressor:

1. Two-stage compression reduces the compression ratio of each stage, reduces internal leakage, improves volumetric efficiency, reduces beaning load, and increases the life of rotos…
2. Using two-stage compression rather than single one, the increase of air output volume can be 15%, means 15% energy saving
3. The rotor adopts the newly design, has been through more than 20 processes of finishing, to ensure the accuracy, reliability and effectiveness of the rotor profile.
4. The two-stage compression is more efficient and energy saving, has been through saving energy as much as 35% comparing with ordinary constant frequency machine.