Axial Flow and Combined Axial-Radial Flow Compressors for High Efficiency

Axial flow compressor cutaway

Compressors for high flow applications

Axial flow and axial-radial flow isothermal compressors are designed to handle large volume flows of air within a relatively small casing while maintaining excellent thermodynamic efficiency. Casings are fabricated and can have either axial or radial inlet. Performance control is achieved by either speed variation or adjustable guide vanes, or a combination of both. Our experience in designing and building these compressors dates back to 1955. Combined axial-radial compressors are offered for applications requiring higher pressure ratios and intercooling. The design of this product family incorporates an axial process stage followed by one or more centrifugal process stages. The design principle common to both compressors designs is a modular concept based on finely graded machine elements and flow components that have proven their reliability over decades of operation.    

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Axial flow and combined axial-radial compressors


  • Refining (FCC/RCC catalyst regeneration air) 
  • Steel (blast furnace air) 
  • Nitric acid 
  • Large volume air separation 
  • Sewage treatment 
  • Industrial air (wind tunnels and high-altitude test chambers) 
  • Compressed Air Energy Storage (CAES)
  • Propane dehydrogenation

Package Options

Axial compressors can be packaged together with drivers, speed gears, lube oil systems and other auxiliaries for ease of installation and commissioning. Items can alternatively be shipped individually where installation on a concrete table plate, for example, is preferred. 


Electric motors, steam turbines or hot gas expanders, depending on process and available energy sources.

Axial Design Features

  • Capacity: 50,000 to 1,300,000 m³/h; 30,000 to 765,000 cfm
  • Discharge pressure: 1.9 to 6.0 bar / 27.6 to 87 psi
  • Speed: up to 9,000 rpm 
  • Stages: up to 19 
  • Discharge temperature: up to 350 °C / 662 F

Axial-Radial Design Features

  • Volume flows from 50,000 to 1,300,000 m³/h; 30,000 to 765,000 cfm
  • Pressure ratio between 5.8 and 16.0
  • Up to ten axial and three radial stages
  • Up to three process stages
  • Intercooling possible after each process stage

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