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Nx Series 4-37kW


Compact in design, robust in power, the Nx’s smooth, quiet operation is ideal for a wide variety of applications ranging from auto body shops to light industrial.

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High-Performance, Legendary Reliability

Stable air pressure, steady airflow and quieter, continuous-duty operation are just a few of the advantages you get with FS-Curtis rotary screw compressors. These smart, compact units also offer better air quality with less oil carryover than reciprocating models. Intuitive controls and diagnostics make them easy to use and service, too. It all adds up to an extremely reliable machine that can run 100% continuous duty, delivering more airflow and better efficiency in a space-saving design — making the Nx Series ideal for automotive, light industrial and other applications that require reliable performance in demanding conditions.

 Nx 4-37 kW Features


Designed for quiet operation.

  • Integration of centrifugal blower and drive motors make for extremely smooth and quiet operation
  • Extra-thick sound insulation reduces noise
  • Can be installed in applications where a quiet setting is important


The ultimate in system protection and reliability.

  • Protects critical components from compressor-generated heat
  • Extends component life and reduces downtime
  • Compartmentalized air flow design and standard aftercooler


Built to the highest levels of dependability and reliability.

  • Standard TEFC motor protects compressor from surrounding dirty air, increasing the efficiency and proloning the life of the motor.
  • Spin-on air/oil separator allows for quick maintenance and results in one-to-three PPM oil carryover. This translates into lower maek-oup oil costs and higher quality compressor air. This
    translates into lower make-up oil costs and higher quality compressed air.


Designed for low cost of ownership and easy service.

  • Space-saving design
  • Pulsation-free air
  • 100% continuous duty
  • Extended service intervals
  • More CFM per horsepower
  • Improved air quality
  • Energy efficiency at full load delivers more air for the mone integrated into a smaller footprint
  • Exclusive FS-Curtis airends utilize the latest rotor profile to maximize efficiency


Ideal combination of variable speed drive, controller, and drivetrain.

  • The VSD – time proven directly coupled design – offers faster response and greater operational efficiency
  • Variable operation slows airend speed, which lowers energy costs and reduces wear
  • With DemandSmart technology, the VSD enhances quality by stabilizing air pressure at 1 psi increments
  • Built-in DC Choke protects against harmonic disturbances and eliminates the need to source additional corrective devices
  • iCommand Controller is intuitive and easy to use while precisely delivering compressed air usage


Ideally sized prefilter and integrated refrigerated dryer.

  • Saves floor space and reduces wasted time and installation cost

NxGEN Warranty

FS-Curtis backs the Nx products with first in industry extended warranty. The major components such as electric motor, separator tank, air/oil cooler and VFD/controller are covered by a full non-prorated 5 year and our airends are covered for a full 10 year of peace of mind coverage.

Since 1854, our legacy at FS-Curtis is to build durable and long lasting products. Since we believe in what we manufacture, we back our products with an unprecedented, long standing, best warranty in the industry.

The Nx Series with iCommand Touch Controller was awarded the Gold Award for the 2015 Plant Engineering Product of the Year Compressed Air

Contact us regarding Nx Series 4-37kW

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Related Industries

Automotive Industry| Food & Beverage Industry| Woodworking Industry| Plastics Industry| General Manufacturing|


1905 Kienlen Ave
St. Louis, MO 63133