Nitrogen Generator Manufacturers

On Site Gas Nitrogen Generators offer the highest quality nitrogen generators utilizing our ISO certified factory along with outstanding engineering experience. We are experts in creating reliable and cost-effective nitrogen generation solutions. Our experienced nitrogen generator experts can help you to determine which nitrogen generator system will best meet your N2 gas needs.

For decades, On Site Gas has been recognized as the leading authority and expert in designing and constructing customized nitrogen generators that operate on-site of plant locations. Our nitrogen generators are applied to mission-critical functions in several industries, across over one hundred nations worldwide. Learn more about our nitrogen generators here!

PSA Nitrogen Generator.


PSA (Pressure Swing Adsorption) nitrogen generator systems will generate high purity N2 gas by separating the molecules from ordinary air.

membrane nitrogen generator system


A nitrogen membrane system will generate high volume flows to meet your n2 gas needs.

Nitrogen Generators


Customized-engineered and turnkey nitrogen generator systems.

Nitrogen Generators


Nitrogen container systems for highly efficient, cost-effective nitrogen gas generation.

nitrogen generators


On location nitrogen generators to be used in storage and tap delivery of beverages.

Nitrogen Generators


Compare to the costs of bottled N2 gas. Fill your own nitrogen gas cylinders and save with our nitrogen generators.


Our nitrogen generator experts can design any size nitrogen generator system to meet your specific n2 gas needs and specifications. We offer a wide array of nitrogen generator systems and accessories. Whatever your industry or N2 gas generator application, we will work with you to create the best solution. Our nitrogen generator systems deliver low operating costs and rapid return on investment.

Pressure Swing Adsorption (PSA) Nitrogen Generators

When choosing a nitrogen generation system, it is important to consider and evaluate the purity of the gas and the quantity needed. Then, identify the application that the nitrogen generator is supplying and the end result required for the task (or operation).

Both PSA nitrogen generators and membrane systems generate high volumes of nitrogen. Each one delivers a comparable volume, the cost of operations, and maintenance, but they differ in the purity of the product. If your application requires 99.5 percent or higher purity, the PSA nitrogen generator is the best choice. Levels of purity that are less than 99.5 simply require a membrane-based generator.

The costs for operating a PSA nitrogen generator are greater per volume of nitrogen produced than for membrane units. There are also membrane methods that operate on house air pressure as opposed to electricity (used for gas generation.) The lower the levels of oxygen that is required for your application, the higher the energy consumption that is required to achieve the levels needed.

PSA Nitrogen Generator Systems


For more than thirty years, On Site Gas Systems Inc., has been a world leader in the design and manufacturing of N2 gas generators, with two Connecticut-based ISO 9001-2015 and ISO 13485-2016 certified factories.

Did you realize that 79% of the air we breathe is made of n2 gas? This gas not only sustains us, but it is also essential for a vast number of professional processes across various industries, depending on a reliable and consistent supply of nitrogen. There are many, but some of the most common uses of nitrogen include:

  • Electronics Manufacturing
  • Food Packaging
  • Manufacturing Processes
  • Metal and Heat Treating
  • Adhesive Purge
  • Medical Processes

On Site Gas Systems Nitrogen Generators can provide a flow of up to 99.9995% n2 gas, simply with the press of a button. Each UL and CE-certified commercial nitrogen generator is equipped with an oxygen analyzer to instantly read purity level.  With thousands of systems operating in over 100 countries, On Site Gas Systems can supply you a safe and cost-effective nitrogen generator that will meet your n2 gas needs for twenty plus years.

A variety of industries may benefit from a nitrogen generator. The ability to produce your own n2 gas ensures you’ll never run out and your business will continue to operate smoothly. An On-Site Gas Systems Nitrogen Generator meets your needs on demand, whenever and wherever you need it, and consistently shows up for your business.

On Site Gas Systems provides some of the most efficient nitrogen generators in the world due to their low air-to-nitrogen ratio. We utilize only the best and most efficient Carbon Molecular Sieve (CMS) which provides lower feed air supply, resulting in a more efficient system and ultimately, more cost savings for your bottom line.

Our systems are competitively priced and have some of the lowest operational and maintenance costs in the industry.  Most On Site Gas Systems Nitrogen Generators have an ROI of under 18 months and after that, provide n2 gas to our clients at a fraction of the supplier cost.

Our nitrogen gas generator systems can deliver continuous n2 gas at a specified flow rate and purity level.

Many modern business processes can benefit from innovative equipment like the nitrogen gas generators from On Site Gas Systems. Our turnkey nitrogen gas generators can be put online as soon as they arrive at your location and offer unparalleled ease of use for a diverse range of applications across various industries.

Don’t struggle with the hassles of inefficient nitrogen gas generator systems and costly nitrogen supply and delivery. With nitrogen gas generators from On Site Gas Systems Inc., you can produce the n2 gas your business requires, whenever and wherever you need it.

To learn more about our nitrogen generation systems for sale, or to receive a quote, contact On Site Gas today!

On Site Gas is the Leader in Building the Perfect Nitrogen Generation System

We manufacture only the highest-grade nitrogen generation systems and nitrogen generators at both of our ISO 9001-2015 and ISO 13485-2016 certified plants (located in the USA), built by our team of exceptionally experienced engineers. The result of their work allows our customers to not only acquire the most dependable and cost-effective nitrogen generation solution available anywhere on the planet, but also a nitrogen generator that is custom-matched to suit your individual needs. We at On Site Gas pledge secure, reliable, and economical nitrogen generators to our customers.

On Site is top flight when it comes to customizing a nitrogen generator system for your business, as our products are ones that you can depend on to operate your day-to-day production effortlessly, and without interruption. To learn more about the nitrogen generation system that suits your needs, consult with a member of our customer care team today. Our experts are here to help you choose the nitrogen generator solution that is right for you.


What is a Nitrogen Generator?

A nitrogen generator is a piece of equipment that separates oxygen out of the air and allows the remaining nitrogen to be used in many industrial, manufacturing, and inerting processes. Nitrogen generators are a cost-effective alternative to purchasing nitrogen gas due to the ongoing cost of nitrogen gas cylinders or bulk nitrogen deliveries.

What is Nitrogen Gas?

Nitrogen was discovered in 1772 and is an inert gas that’s highly abundant in the atmosphere. It makes up nearly 80% of the earth’s atmosphere. It’s often said that nitrogen is the “key to life” because it’s in air, water, soil, and plants – it is also an essential part of our DNA.

While oxygen is critical to support life, nitrogen is used in many industrial and manufacturing operations.

What Are PSA Nitrogen Generators?

PSA stands for pressure swing adsorption. PSA nitrogen generators generate high-purity nitrogen gas by separating nitrogen from other molecules in the air. These systems operate by filling a carbon molecular sieve with compressed air. Nitrogen molecules are large and collected in a nitrogen receiver – while the sieve adsorbs smaller oxygen molecules. Once the separation has occurred, the oxygen molecules get vented into the atmosphere. PSA nitrogen generators produce high volumes of nitrogen with high purity.

On-Site Nitrogen Generators vs. Nitrogen Gas Cylinders

There are many reasons to consider an on-site nitrogen generator over nitrogen gas cylinders.

On-site nitrogen generators can be purchased for a one-time cost versus buying nitrogen in gas cylinders or bulk liquid nitrogen, which represents an ongoing cost for as long as you rent or buy them. After a one-time purchase of a nitrogen generator, it only takes five amps of power, which will result in huge cost savings over the years.

An on-site nitrogen generator will typically take up less space than nitrogen cylinders or bulk tanks. Some businesses must devote a lot of space to nitrogen cylinders, especially if they need quite a bit of nitrogen for their manufacturing processes.

Nitrogen cylinders automatically waste nitrogen, as only about 70% of the nitrogen in a cylinder can be used. Nitrogen generators only produce nitrogen as needed, so none goes to waste.

Nitrogen cylinders must be delivered on an ongoing basis, thus using fossil fuels. Nitrogen generators are better for the environment.