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Open screw compressors

The BITZER OS series open screw compressors are designed and built for applications with HFC or ammonia (NH3) refrigerants. Their high cooling capacity makes them suitable for industrial applications and ship cooling systems. With the application of standard transmissions and casings it is possible to operate them with common normalized electric motors. Special versions (ATEX) are available for use in areas at risk of explosion.

The OS series for NH3 open screw compressor series includes the following versions:

  • OSKA95 for industry and heat pump air conditioning – from 910 to 1225 m 3 h
  • OSKA for medium temperature air conditioning and cooling – 84 to 640 m 3 h
  • OSNA for low temperature operation – 84 to 640 m 3 h
  • OSHA for high temperatures – 192 to 266 m 3 h
  • OSKAB for air conditioning and cooling at medium temperatures – 84 to 640 m 3 h

The OS series for standard refrigerants open screw compressors includes the following versions:

  • OS K for air conditioning and medium temperature cooling – from 84 to 640 m 3 / h
  • OS N for low temperature operation – 84 to 640 m 3 / h
  • OS KB for air conditioning and medium temperature cooling – from 84 to 495 m 3 / h

The series of open screw compressors OS series for hazardous areas includes the following versions:

  • OS K (A) EX for Zone 1 and 2 – requirements of category EEX “GcT4 – from 165 to 302 m 3 / h
  • OS N (A) EX for Zone 1 and 2 – requirements of category EEX “GcT5 – from 165 to 302 m 3 / h

Consult the catalog Open screw compressors

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