Brochures & Resources

The new benchmark for small OXYGEN and NITROGEN air separation plants.

The Spruce plants are designed specifically to meet the challenge of ever-increasing global power and fuel costs while maintaining the high reliability and mobility of a modular design that is container shippable.

This innovative plant is built to meet the highest industrial gas safety and quality standards to ensure flawless and reliable performance under the most severe operating conditions.

Structurally ideal for emerging markets and remote locations, the Spruce plants phenomenal efficiency makes it equally suitable for more long-term production applications.


Features & Benefits

  • Mobility, reliability, safety and durability
  • High-performance ACD, roller element bearing Turboexpander with cartridge-stylerotating element for easy removal and installation.
  • Roller element bearings allow excellent loss-of-power protection for rundown, ideal for unreliable power supply.
  • Proven TSA air pre-purification system.
  • Efficient, reliable oil free centrifugal or dry screw compressors.
  • Choice of 50 or 60 Hz power systems.
  • Ships as three standard ISO containers to minimize transportation expense.
  • Complete with all interconnecting piping and electrical systems, ready for installation.
  • State-of-the-art control system designed to allow unattended night-shift operation enabling remote optimization, problem solving and remote start-up as well as unattended startup.
  • Cold box and warm end lighting included.
  • Siemens S7 PLC Fully automatic digital process-control system with PC Based HMI.
  • CE compliance
  • Factory cold performance Test
  • Dry Cooling towers
  • Integrated cylinder filling system
  • ISO container Control Room
  • Integrated product storage, high pressure pumping and transfer system
  • Air cooled, evaporative water cooled or dry glycol cooling tower cooled


  • Air Separation
  • Medical
  • Manufacturing
  • Packaging


  • On-site or in-factory operator training
  • Installation and commissioning assistance
  • Extended warranty package
  • Service package


SPRUCE Performance Table

Click on the table to open in a new window.


The Spruce ASU’s meet the demanding needs of remote island locations and emerging markets. With models ranging from 7 – 20 tons per day, the Spruce ASU plants were specifically designed to meet the logistical, technical, infra-structural and environmental challenges of remote locations such as tropical islands or emerging countries. They provide an elegant, cost-effective and robust solution to the challenges of island industry, or those locations where infrastructure and technical resources may be limited. These flagship packaged plants represent a new era for modular ASU’s, combining our Nikkiso Cosmodyne plant’s traditional robust mobility with high efficiency and state-of-the-art control and PLC logic.