Sauer Compressors – Passat Series

Sauer Compressors USA has spent the last 70 years developing compressors for a wide selection of industries and functionalities. Customers continue to turn to Sauer for process engineering that requires high-quality compressed gas or air. Today Sauer offers 3 and 4-stage gas compressors for up to 5075 PSL in a standardized product range. Passat Series Sauer compressors and boosters (the ‘G’ series) are air-cooling, oil-lubricated, and single-acting reciprocating compressors that have been engineered with a gas-tight crankcase to prevent gas leakage. The ‘G’ series compressors and boosters perform similarly to the ‘H’ series except for the fact that they are designed for noble gases such as Helium and Argon, and hazardous gases such as Carbon Monoxide and Natural Gas.

You can find all Sauer compressors at any of our Midwest Brabazon locations. Contact us today to talk to an Account Manager and discover which air compressor is best for your specific needs.

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Features & Benefits

The Passat Series Saurer compressors ensure reliability with oil pressure fed to the crankshaft bearings and oil splash for compression, combined with a Sauer regulated oil injection system for the final piston plunger design. They are able to handle elevated suction pressure for both noble and hazardous gases, providing enhanced performance to final pressures between 290 – 580 PSI reliably in three stages and from 1450 – 5075 PSI in four stages within the gas flow rate range of 5.9 – 236 SCFM. 

Standard Features of Passat Series Sauer Compressors


  • Multi-stage oil-lubricated piston compressor.
  • Inter-stage and final after-cooler with oil and water separators.
  • Over-pressure safety valves at each stage.
  • Gas-tight over-pressure safety valves at each stage.
  • Automatic oil and water drain valves.
  • Oil lubrication including protection sensor. 
  • Gas over-temperature protective shutdown sensor. 
  • Pressure indicator at each stage.
  • Auto-starting relief integrated with drain system.
  • Air-blast cooling fan and flywheel.
  • Gas suction connection.
  • Flexible drive coupling.
  • Direct drive electric motor.
  • Direct drive ex-motor (ATEX).
  • Resilient AV mounts.
  • Outlet flexible hose with non-return valve.
  • Flexible oil and water drain hose.
  • Ex-proof drive coupling
  • Anti-static air-blast cooling fan.
  • Inlet gas pulsation damper.
  • Suction gas protection.
  • Outlet oil coalescing filtration. 
  • Outlet purge connection.
  • Final pressure maintaining valve.
  • Gas recovery.


  • Auto stop and start pressure sensor control.
  • Gas drying.
  • Outlet oil vapor activated carbon filtration.
  • Flexible suction gas hose.
  • Capacity control.
  • Suction gas shut-off valve.
  • Suction gas regulation.
  • In-line gas suction filter.
  • Supply gas excess flow valve.
  • Supply gas non-return valve.
  • Supply gas isolating valve.
  • Supply gas pressure sensor control.
  • Electric control panel and ATEX zone 1 and 2. 
  • Intrinsic safe terminal box for electrical connections.
  • Intrinsic safe relays for pressure and temperature monitoring.
  • Acoustic enclosure.
  • Oil and water collection tank.
  • Oil and water drain gas separator “Demister’ vessel.
  • Auto start and stop pressure sensor control.
  • Crankcase oil sump heating.
  • Lubricating oil level alarm.
  • Pressure and temperature indicators and sensor switch at all stages.