Compact Compressor


Designed for a variety of OEM applications, including water processing and emergency vehicles, the 405 Series compressor provides high performance in a compact design (6.74” x 4.25” x 5.3”). This versatile, oil-less, single-cylinder compressor features Thomas’ innovative WOB-L® design, stainless steel valves, lightweight die cast aluminum components and a thin wall hard-coated aluminum cylinder for maximum heat transfer. 

In addition, the 405 Series is available in both AC and DC models and is balanced for smooth, low vibration operation. Pressure to 40 PSI (2.8 bar) for AC models, and to 100 PSI (6.9 bar) for DC models.


  • stainless steel valves
  • lightweight die cast aluminum components 
  • single-cylinder
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