United Fire Systems Nitrogen PAC Preaction Fire Sprinkler Suppression Corrosion PreventionThe NITROGEN-PAC™ M (Modular) Series from UNITED Fire Systems is a unique approach to supplying nitrogen for sprinkler systems. The modular concept allows for the 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.

Learn more about the NITROGEN-PAC™ M Series by checking out our info sheet or by giving us a call at 908.688.0300.

The NITROGEN-PAC™ M Series System

All NITROGEN-PAC™ M Series Systems include:

  • Compressor/tank assembly
    • Robust belt-driven piston-type nitrogen 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…

Give us a call at 908.688.0300 or contact us online to learn more. We’re happy to serve you.


Data Sheets +-

Engineering Specifications & Drawings +-

For .DWG and .DOC versions of these documents, download our Specification Developer

Manuals +-

Instruction Sheets +-

Commissioning & Maintenance Checklists +-

Sales Literature +-

Info Sheets +-

Technical Notes & Important Info +-

Warranty Information +-

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.