Engineered with Pressure Swing Adsorption (PSA) technology, the PSA Generator provides Oxygen at flow rates from 10 Nm3/hr to 1250 Nm3/hr. The purity levels of the Oxygen range between 90% to 93% with standard outlet pressures of up to 6 bar.

Generating Oxygen gas at the point of use is a sustainable, environmentally friendly and energy efficient approach to providing pure, clean, dry Oxygen gas onsite.

Compared to the energy required to transport bulk Liquid Oxygen (LOX) from the plant to the facility, generated Oxygen consumes far less energy and creates far fewer greenhouse gases.


PSA oxygen generators utilize the well-known and mature Pressure Swing Adsorption technology. Atmospheric air comprises of 20-21% oxygen and the PSA process utilizes Zeolite molecular sieves to extract this Oxygen from air. Oxygen at 93% is delivered, while the nitrogen adsorbed by the molecular sieves is vented back into air through the exhaust line.

PSA process consists of 2 vessels filled with Molecular Sieves and Activated Alumina. Clean compressed air at 30° C temperature is passed through one vessel and oxygen comes out as product gas. The exhaust gas (Nitrogen) is discharged back into atmosphere. Upon saturation of the molecular sieve bed, the process switches Oxygen generation to the other bed by automatic valves, while allowing the saturated bed to undergo regeneration by depressurization and purging to atmospheric pressure. Thus 2-vessels keep cycling alternately in Oxygen production and regeneration ensuring Oxygen gas is continuously available to your process.



PSA Oxygen generators are suitable for flows from 10 nm3/hr to 200 nm3/hr. For higher flows, we recommend VPSA oxygen generators.


Purity up to 93 to 95 % is easily achievable by PSA oxygen generators, with balance mostly being a mix of inert gases such as nitrogen and argon. While this purity is suitable for many applications such as water purification, furnace enrichment, it may not be suitable for applications where 99% purity is a must.


Our PSA oxygen generators can deliver oxygen directly at 5 kg/cm2g pressure without an additional booster, making is suitable for most applications. If higher pressure is required by customer process or for storage, then we supply an additional booster.


Our Oxygen generators deliver very dry gas, with dew point as low as (-) 40°C. We also offer measuring instruments for online detection of gas dryness



Our PSA Oxygen Gas Generators are widely used across many industries including:

  • Paper and Pulp industries for Oxy bleaching and delignification
  • Glass industries for furnace enrichment
  • Metallurgical industries for oxygen enrichment of furnaces
  • Chemical industries for oxidation reactions and for incinerators
  • Water and Wastewater treatment
  • Metal gas welding, cutting and brazing
  • Fish farming
  • Glass industry

For further information on our products & services, please do contact us.