HAUG.Sirius oil-free and gas-tight compressors (7.5 - 30 kW)

The HAUG.Sirius series has been used since 1973 for compression of air and gases and is a very mature compressor concept which, over the decades, has been continuously improved and developed. In the meantime, countless variants have been made available for different applications.

HAUG.Sirius compressors with magnetic coupling were developed by HAUG Sauer and provide compression of gases without leaks. This hermetically sealed and entirely wear-free drive was first employed by HAUG Sauer in a piston compressor in 1989 and can be used for suction pressures up to 31 bar(abs).

Magnetic coupling
With the HAUG compressor design, a permanent leak rate of less than 0.001 mbar l/s is achieved

  • Permanent, hermetic gas-tight compressors at standstill and in operation
  • The hermetically sealed piston compressor is achieved by a magnetic coupling drive
  • No wear of the sealing element
  • No sealing gas
  • No loss of energy

High suction pressure

  • Suction pressure up to 31 bar(abs)
  • Hermetically gas-tight, no gas loss and wearout
  • Low energy consumption, better efficiency, lower power requirements
  • Compact compressor


  • Completely oil-free and dry-running piston compressor
  • Permanently technically tight with magnetic coupling
  • Environmentally friendly because it is oil-free, gas-tight and efficient
  • HAUG.Sirius compressor block leak rate < 0.001 mbar l/s
  • Air-cooled or water-cooled versions
  • Motor power from 7.5 to 30 kW
  • Rotary speed range 970 to 1450 1/min
  • Suction pressure max. 31 bar(abs)
  • Final discharge pressure max. 101 bar(abs)
  • Modular cylinder configuration with cylinder diameter up to 180 mm
  • Versions with 2, 3 or 4 cylinders with 1-, 2-, 3- or 4-stages execution
  • Maximum flow rate at atmospheric intake pressure approx. 400 Nm3/h
  • Booster compressor version flow rate max. approx. 1000 Nm3/h
  • Explosion-proof compressor version (conform with ATEX zone 1 or zone 2)
  •  Very robust and long-lasting construction
  • Compact and foundation-free installation


  • Carbon dioxide recovery, and carbon dioxide compression of supercritical CO2
  • Nitrogen inert gas supply during ESD (Emergency Shut-Down)
  • Recovery of Natural Gas (leakage gas)
  • Oil-free booster compression of oxygen
  • Oil-free booster compression of nitrogen and air (CDA = Clean Dry Air)
  • Oil-free recovery and compression of SF6 gas
  • Oil-free booster compression of natural gas and biomethane
  • Oil-free compression of noble gases such as helium, argon
  • Compression of refrigeration gas for example C3F8, R410 or ammonia
  • Compression of syntheses gas for production of methane and hydrogen as well as power-to-gas applications

Product catalogues