• 979 Portwest Drive, Suite 101 - Saint Charles, MO 63303, USA

Used Nitrogen Generators & Surplus Nitrogen Generators

Holtec systems often replaces nitrogen generators produced by other manufacturers, and sometimes our customers ask us for assistance in disposing the used equipment.  We do our best to help our customers, sometimes purchasing the old equipment for refurbishment, and sometimes simply assisting in finding a new home for a nitrogen generator that still works.

This translates into substantial savings for our customers.  The level of refurbishment varies from new or “as is” to completely re-worked, improved, and warranted systems.  Currently, we even have new surplus equipment and in-stock inventory that has never been used.

See below for a list of used nitrogen generators that are currently available:

Two Brand NEW High Performance PSA Nitrogen Generators available for quick delivery

(Each system includes 2 x 5,000 gallon air and N2 receivers plus a filter skid.)

If your production is down because your liquid nitrogen supplier is unable to deliver, this could be the solution to your problem. Making your own nitrogen will reduce your expenses and these systems are available at a greatly reduced price as well. Contact us for further details.

Design N2 Flow*:
586 – 221 SCFM at 99.9 – 99.999% nitrogen purity (less than 1000 – 10 ppm O2).

Design Air requirement:
1,875 – 1,194 SCFM (±5%) at 102 psig inlet pressure and 68 °F.

Design Ambient Temperature Basis:


These nitrogen generators were built for a customer that decided not to use these systems. Available for immediate delivery at greatly reduced price.

* The units include ppm O2 analyzer.This can be replaced with a % analyzer and the systems can deliver significantly more N2 at lower purity.

Storex N2GEN35

Description:  Refurbished VPSA nitrogen generator which has been refurbished, repainted, and tested at Holtec.   Design is suitable for maintaining low oxygen levels in a sealed room for fruit storage or other similar applications.

Refurbished Storex-N2GEN35 nitrogen generator from Holtec

Status:  Completed, Factory Tested
Delivery:  Available immediately

Factory Test Results

N2 FlowO2 Content

New Containerized Membrane Nitrogen Generator

Capacity at 145 psig and 105°F: 447 SCFH, 99% N2 Purity


  • Includes air compressor with refrigerated dryer, air and nitrogen receivers
  • Dual everything for double flow or 100% backup
  • Ideal for warmer climates
  • 400V – 3ph – 50Hz
  • Includes room O2 monitor for personnel safety
  • Intake fans and automated louvres for temperature control
Outside view of Containerized Membrane Nitrogen Generator
Inside view of a Containerized Membrane Nitrogen Generator


Design N2 Flow: 44 SCFH at 99.995% nitrogen purity (less than 50 ppm O2)

Design Air requirement: 3.3 SCFM (±5%) at 100 psig inlet pressure

Design Ambient Temperature Basis: 70°F

Status: New/unused

Description: This small custom nitrogen generator was designed and built as part of a larger project where the customer determined it was not needed. Available for immediate delivery at discounted price.

Used Nitrogen generator HNBS 8 series from Holtec

Nitrobreeze™ Series Stock

Holtec has committed to stocking several of its compact Nitrobreeze™ (HNBS) series of nitrogen generators in order to offer fast delivery for customers. Please contact us for very competitive pricing!

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Used Nitrogen Generator Nitrobreeze series from Holtec Gas Systems