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MSG series

Cameron company presents the MSG (Multi-stage Geared) centrifugal compressor series which offers outstanding design flexibility. Multi-shaft compressors of MSG series are available for different process applications:

  • Capacities from 60 m3/min to 2,550 m3/min
  • Power rating over 14,900 kW
  • Discharge pressure up to 82 bar (g)

Compressed air applications

  • Industrial gases
  • Instrument air
  • Soot blowers
  • Air supply systems for major plants

Gas compressor applications

  • Fuel gas booster
  • Compressors for refrigeration cycles
  • Carbon monoxide
  • Carbon dioxide
  • Syngas
  • High-pressure nitrogen
  • Recycling compressor for gases with small molecular weights

Oil-free gas and air

  • Prevents contamination of the system
  • Removes the potential for compressed air pipeline fires caused by oil carryover
  • Eliminates costly waste disposal problems associated with oil-laden condensate
  • Eliminates the expense and maintenance of oil removal filters

Mechanical design

Cooper Compression’s centrifugal compressors are extremely reliable due to the following features:

  • Conservative, high-quality gear design
  • Long-life drive pinion bearing design
  • Axial loads absorbed on low-speed shaft
  • Compressor parts made of stainless steel

Easy operation/maintenance

  • State-of-the-art control systems
  • Totally automatic operation in any operating condition
  • Self diagnostics
  • No wearing parts requiring periodic changes or replacement
  • No oil removal filters to clean
  • Accessible horizontally split gear boxes for quick inspection
  • Intercooler and aftercooler bundles easily removed for cleaning

Simple installation

  • Compressor, lubrication system, intercoolers, shaft couplings, coupling guards, connecting pipelines, etc. are mounted on a common skid
  • Installation on a solid foundation can be completed in a very short time
  • Easy access to components
  • High flexibility in compressor adaptation to the client’s needs
  • Minimized floor space requirements
  • No pulsations


Standard three-shaft gas compressor design

  • 01: One, two or three rotors, up to six stages per gear box
  • 02: Horizontal joint provides ready access to gear components
  • 03: Special seals

Air flow diagram

  • 01: Compressor suction
  • 02: First-stage volute
  • 03: Cooling water inlet
  • 04: Cooled water outlet
  • 05: First-stage intercooler
  • 06: Second-stage volute
  • 07: Second-stage intercooler
  • 08: Third-stage volute
  • 09: Compressor discharge

ONE OR TWO-STAGE WITH ONE OR TWO ROTORS

One or two standard intercoolers One or two high-efficiency intercoolers
L H W Wgt* L H W Wgt*
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm
MSG6/7/7A 195 4960 110 2800 120 3050 36100 16400 185 4700 100 2800 130 3310 40000 18200
MSG8/9/9A 205 5210 110 2800 130 3310 53000 24100 1215 5470 140 3560 145 3690 60000 27300
MSG12 230 5850 155 3940 150 3810 76000 24100 255 5720 155 3940 145 4320 85000 38600
MSG14/16 255 5720 155 3940 170 4320 85000 34500 235 5970 155 3940 170 4580 86000 39100
MSG20 255 6480 175 4450 185 4700 11500 38600 255 64800 175 4450 180 4700 111500 50600
MSG25 255 64800 175 4450 185 4700 11500 52200 255 64800 185 4450 185 4700 111500 52200

FOUR, FIVE OR SIX-STAGE WITH TWO OR THREE ROTORS

One or two standard intercoolers One or two high-efficiency intercoolers
L H W Wgt* L H W Wgt*
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm
MSG6/7/7A 200 5080 125 3180 140 3560 50000 22700 205 5210 125 3180 140 3560 52600 23900
MSG8/9/9A 185 4700 125 3180 135 3430 54000 24500 210 5340 135 3430 145 3690 55000 25000
MSG12 225 5720 155 3940 170 4320 77000 35000 255 5720 160 4070 175 4450 94000 42700
MSG14/16 255 5720 160 4070 175 4450 94000 42700 235 5970 170 4320 190 4830 110000 49900
MSG20 255 6480 175 4450 225 5720 140000 63500 255 64800 175 4450 225 5720 140000 63500
MSG25 255 64800 185 4700 230 5850 158000 71700 255 64800 185 4450 230 5850 158000 71700

Structural Design Examples


3R2MSGPB-5G/30 Gas Compressor


APPLICATION: Located in Algeria, used as boil off compressor.


SPECIFICATIONS: 732 kPa (a) discharge pressure

4MSG-16/15 Air Compressor


APPLICATION: Located in China, used as main air compressor for air separation plant.


SPECIFICATIONS: Flow = 59,000 Nm3/hr, Discharge Pressure = 1241 kPa(a)

3MSGPB-5G/30 Air Compressor


APPLICATION: Located in Atyrau, Kazakhstan, used as hydrogen-rich gas recycling compressor.


SPECIFICATIONS: Flow = 35,000 Nm3/hr, Discharge Pressure = 5.80 MPa