When onsite nitrogen is critical to your operation, buying a new generation system isn’t the only option. A refurbished nitrogen generation system may provide a practical and cost-effective way to meet your nitrogen requirements—provided the equipment, air supply, flow, and purity specifications are properly assessed. EHL can help evaluate the complete system and determine whether an available refurbished unit can meet the technical demands of your application.

For businesses requiring a reliable supply of nitrogen, a refurbished nitrogen generation system can provide a practical alternative to purchasing new equipment.
However, selecting a refurbished generator is about more than finding a suitable machine. The feed air quality, pretreatment, operating conditions, flow capacity, pressure and required nitrogen purity all need to be considered against the demands of the application.
This is where EHL can add value.
A suitable refurbished nitrogen generator may provide an opportunity to establish onsite nitrogen generation while reducing the initial capital investment associated with a new system.
Instead of simply supplying a generator, EHL can assess the complete system to determine whether the equipment is appropriate for the intended application.
Key considerations include:
Nitrogen generators rely on a suitable supply of compressed air. If the feed air does not meet the generator’s requirements, performance, purity, reliability and membrane or PSA component life can all be affected.
EHL can undertake an overall system assessment, including the compressed-air supply and associated treatment equipment.
Depending on the application, this may include checking filtration, drying, oil and particulate removal, pressure, flow and other operating parameters to establish whether the available air supply is suitable for nitrogen generation.
This whole-system approach helps identify potential limitations before equipment is commissioned or integrated into an existing installation.
Not every nitrogen application requires the same purity.
Depending on the process, nitrogen may be required for applications ranging from general inerting and blanketing through to applications requiring significantly higher purity.
EHL can help assess the required nitrogen specification and determine whether an available refurbished generator can realistically meet the required purity and flow at the point of use.
Where appropriate, system checks and commissioning support can also help verify that the installed equipment is operating in accordance with the intended specification.
A refurbished generator should not be treated simply as a piece of second-hand equipment.
EHL can provide technical input across the wider nitrogen generation system, including:
The objective is straightforward: match the available equipment to the application and establish what is required for dependable onsite nitrogen production.
If you are currently purchasing nitrogen in cylinders, relying on bulk supply, or considering a new nitrogen generator, it may be worth investigating whether a suitable refurbished system could meet your requirements.
EHL can assess your application, review the available equipment and identify the technical requirements that need to be addressed before installation.
A refurbished nitrogen generation system may not be suitable for every application—but where the equipment, capacity, air supply and purity requirements align, it can provide a practical pathway to onsite nitrogen generation.

Looking at onsite nitrogen generation?
Talk to EHL about your nitrogen flow, purity, pressure and application requirements. Our engineering and technical team can help assess the complete system, from compressed-air quality through to nitrogen production and point-of-use requirements.
EHL Group
New Zealand: solutions@ehlsolutions.com | +64 6 755 2412
Australia: solutions@ehlsolutions.com | +61 (0) 421 380 442
Visit www.ehlsolutions.com to discuss your onsite nitrogen requirements.
Important Disclaimer
Refurbished nitrogen generation equipment is subject to availability. System purity, nitrogen flow, pressure and overall performance may vary depending on the specific unit available, its condition, configuration and the application. Final suitability and performance requirements should be confirmed through an application-specific technical assessment before purchase or installation.
What is a refurbished nitrogen generation system?
A refurbished nitrogen generation system is previously used nitrogen-generation equipment that has been assessed, serviced or restored for potential reuse. Its suitability depends on the equipment condition, configuration, capacity and requirements of the intended application.
Is a refurbished nitrogen generator suitable for onsite nitrogen production?
It can be. A refurbished system may be suitable where its nitrogen purity, flow, pressure and operating characteristics match the application’s requirements. The compressed-air supply and pretreatment system should also be assessed.
What purity can a nitrogen generator produce?
Nitrogen purity varies according to the generator technology, configuration and operating conditions. The required purity should be established from the application before selecting a generator.
Why is compressed-air quality important for nitrogen generation?
Nitrogen generators require feed air within specified operating conditions. Excess moisture, oil, particulates, inadequate pressure or insufficient airflow can affect generator performance, nitrogen purity and component life.
Can EHL assess the compressed-air system?
Yes. EHL can assess the feed-air and associated treatment requirements as part of an overall nitrogen generation system review, including filtration, drying, pressure and flow considerations.
Can EHL check whether a refurbished generator will meet my application?
EHL can assess the available equipment against the application’s required nitrogen purity, flow, pressure and operating conditions. Actual performance depends on the specific generator and installation.
Is a refurbished nitrogen generator cheaper than a new system?
A refurbished system can potentially reduce initial capital expenditure compared with purchasing new equipment. However, the total cost should also consider installation, air treatment, commissioning, maintenance and any required upgrades.
What information does EHL need to assess an onsite nitrogen requirement?
Useful information includes the required nitrogen purity, flow rate, pressure, operating hours, application, existing compressed-air capacity and any storage requirements. This allows the available equipment to be assessed against the actual duty.
Does EHL provide ongoing technical support?
EHL can provide technical support covering system assessment, air treatment, nitrogen generation, commissioning, maintenance considerations and troubleshooting, subject to the equipment and project requirements.


