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Automatic Filling Station

The AFS-01 is an automatic shut off liquid nitrogen dewar filling station for standard liquid cylinders.

The AFS-01 is designed to fill portable low pressure liquid nitrogen dewars from a pipe system or bulk tank. The AFS-01 uses a cryogenic sensor to detect a “full” condition. Once full, cryogenic valves shut off the fill cycle maintaining the fill pressure of the liquid cylinder. The liquid cylinder is ready for immediate use.


  • Reduce Losses – Eliminate overfilling and loss of LN2.
  • Improve Employee Safety – Create a safer work environment with fill shut off timer, vent safety interlock, and emergency stop.
  • Workforce Efficiency – Eliminate wasted labor and downtime.
  • Cost Savings – Save money by eliminating the need for dewar deliveries.
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  • Easy to Operate – Allen Bradley PLC controls. Simply, start the process and it will run itself.
  • Adjustable Settings – Adjustable timeout timer and cryogenic sensor threshold.
  • Visual Alerts  Status indicator light and audible alarm contact.
  • Safety – Vent interlock, max fill timer, EMO switch, and fail close valves.
  • Indoor or Outdoor Installation – Fill liquid cylinders where it is most convenient.
Step-by-step video on how the AFS-01 improves safety, eliminates LN2 loss and need for dewar deliveries. 

For additional information or to place an order:

Call: 812.442.0520
Email: sales@technifab.com
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