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Nitrogen-Pac M (Modular) Series

The NITROGEN-PAC M Series from UNITED Fire Systems is a unique approach to supplying nitrogen for sprinkler systems. The modular concept allows for choice of components perfectly sized for the application. Many small to mid-sized systems need an engineered system approach for both proper application AND cost effectiveness. The NITROGEN-PAC M Series permits our expert designers to choose the components that fit YOUR application – with no compromise of protection or dollars.

All NITROGEN-PAC M Series Systems Include:

  • Compressor / Tank Assembly
    • Robust belt-driven piston-type compressor
    • Efficient high-torque motor
    • NEMA-rated air tank
    • Combination filter/regulator at outlet
  • Refrigerated Dryer
    • Reliable, economical operation
    • Rated for ISO Class 6 dew point
    • Environmentally-friendly refrigerant
  • Nitrogen Generator Module
    • High-quality separator membrane
    • Coalescing and particulate filters
    • Valves for initial-fill bypass
    • Rugged steel enclosure
  • Nitrogen Receiver
    • NEMA-rated for reliability
    • Bypass valves for sprinkler initial-fill with air without diluting nitrogen supply
    • Pressure gage for tank monitoring
    • Over-pressure relief valve for safety
  • Accessories
    • Nitrogen/air maintenance device for proper system pressure regulation
    • Purge vent assembly for easy replacement of atmospheric air in sprinkler pipe with nitrogen pressure
    • Hand-held nitrogen analyzer with digital display to monitor nitrogen purity
  • NEW – Optional True Advanced Purge (TAP) for automatic full-time display of nitrogen purity and hands-off automatic control of purging. Click here to learn more…

Data Sheets

Installation, Commissioning & Maintenance Manual

Equipment Selection Guide


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Did You Know?
  • If you have a dry standpipe in your structure, can you tell if it’s intact and ready for fire department use? If it’s not, the risk is high.  Be sure – a UNITED Fire Systems STANDPIPE-PAC system will alert you if someone accidentally leaves a valve open or even disassembles a portion of the standpipe inadvertently.