HAUG.Neptune oil-free and gas-tight compressors (2.0 - 7.5 kW)

The HAUG.Neptune series is used for the compression of any gas. Through the use of magnetic coupling, individual customer specifications and explosion proof requirements can be met.

HAUG.Neptune compressors with magnetic coupling are a HAUG Sauer development that provides permanent gas-tight compression without leakage. This hermetically sealed and entirely wear-free drive was first employed in a piston compressor in 1989 and can be used for suction pressures up to 16 bar.

The modular HAUG.Neptune compressor concept allows highly individual and cost-effective adaptation of the compressor configuration to the customer›s requirements. This allows development of technically, commercially and energetically optimised solutions.



  • Oil-free piston compressor
  • Gas-tight design with magnetic coupling
  • Compressor block leak rate < 0.0001 mbar 1/s   
  • Air-cooled 
  • Motor powers from 2.0 to 7.5 kW
  • Rotary speed range 970 to 1450 RPM
  • Intake pressure max. 16 bar
  • Final discharge pressure max. 100 bar
  • Modular cylinder configuration with cylinder diameter from 13 to 100 mm
  • Version with 2 or 3 cylinders with 1-, 2- or 3-stages execution
  • Maximum flow rate at atmospheric intake pressure ca. 50 m3/h
  • Booster-variant flow rate max. ca. 100 m3/h
  • Booster version
  • Version for explosion-protected plant (conforming with ATEX zone 1 or zone 2)
  • Very robust and long-lasting construction
  • Compact and foundation-free installation

Product catalogue

  • Product catalogue TE


Process compressors for plant engineering for the:

  • Chemicals industry
  • Pharmaceuticals industry
  • Compression of medical gases
  • Electronics industry
  • Glass and steel industry
  • Potable («drinking») water supplies
  • Foodstuffs industry
  • Beverages industry
  • Research & Development
  • Gas recovery
  • Waste-water cleaning facilities
  • Gas production and supply
  • Nitrogen inert gas supply