Pressure Swing Adsorption Nitrogen Generators

Experience uninterrupted productivity and cost savings with Holtec's proven technology. Get precision-engineered, high-purity nitrogen gas tailored to your specific industry needs.


Holtec Pressure Swing Adsorption (PSA) nitrogen generators efficiently produce high-purity nitrogen on-site in various industrial applications. These generators employ a well-established technology known as pressure swing adsorption (PSA) to separate nitrogen molecules from the surrounding air. During the PSA process, compressed air passes through a carbon molecular sieve (CMS). The sieve adsorbs oxygen to provide a cost-effective nitrogen generation process.

Holtec's nitrogen generators feature rugged construction and precise control systems.  They offer both continuous and on-demand nitrogen supply, with purity levels customized to meet specific customer requirements. Industries like food packaging, electronics manufacturing, and chemicals, use nitrogen generators to provide dependable high-purity nitrogen for various processes. 

Check out our portfolio of PSA systems and find the ideal Holtec PSA nitrogen generator for your specific process requirements.

PSA System Operating Principle

Twin tower PSA nitrogen generators work by separating nitrogen molecules from other gasses, ensuring a steady supply of high-purity nitrogen. They pressurize one tower or the other with compressed air, usually around 110 psig / 7.6 barg.  Each tower has its own bed of carbon molecular sieve (CMS). 

The carbon molecular sieve has an important job in PSA systems, picking and holding onto certain gasses while letting others pass through. In the case of a nitrogen generator, it holds onto oxygen, while other gasses, mostly nitrogen, pass through. 

When the adsorbent bed becomes saturated with the molecules it captured, the tower depressurizes to regenerate the bed. When the pressure is low enough, the sieve releases the trapped gas particles and gets ready for the next cycle.  While this is happening, the other tower is pressurized and nitrogen is produced by the carbon molecular sieve there. 

Purity GuaranteedThanks to the PSA innovative technology, our gas generators produce nitrogen with a purity level of up to 99.9995%. In the case of lower purity requirements, the same system can deliver a higher product flow rate and improved nitrogen recovery, which means less compressed air is needed.   

Key Features and Advantages


PSA nitrogen generators maximize yield and enhance overall process performance. What truly sets them apart is their flexibility. These systems can be fine-tuned to enhance nitrogen recovery to match varying oxygen content requirements in different applications. Efficiency isn't just a promise from Holtec, but a reality that empowers your operations with precise and tailored nitrogen solutions.

Ease of Integration

Our plug-and-play PSA nitrogen generators arrive at your facility fully equipped with automatic controls. Startup is a straightforward process; it's as simple as flipping a switch. Maintenance is hassle-free, needing only periodic filter replacements every three to twelve months. Holtec paves the path to seamless integration with simplicity and convenience to ensure your operations run smoothly without unnecessary complications.


With Holtec’s PSA nitrogen generators, you're not just saving money; you're making a smart investment. Say goodbye to the challenges and expenses tied to high-pressure nitrogen bottles, high-pressure cylinders or liquid nitrogen. Holtec solutions streamline your budget while ensuring a reliable source of high-purity nitrogen product.


Reliability is at the core of Holtec's PSA nitrogen generators. You're not just investing in a system when choosing Holtec. You're investing in peace of mind, knowing that your nitrogen needs will be met with unwavering reliability, every time, without fail.

Unlock the Potential with Holtec PSA Nitrogen Generators

Unlocking potential is at the heart of what we do at Holtec with our cutting-edge PSA nitrogen generators. Our unwavering commitment to innovation, reliability, and cost-effectiveness has pushed us to the forefront in the PSA nitrogen generator systems. By choosing Holtec, you're opening the door to a future where nitrogen supply is efficient, safe, and sustainable. Embrace the future with Holtec, where your operations are not just improved but transformed, setting new standards in excellence and reliability.