The FM Approved UNITED Fire Systems NITROGEN-PAC™ Model SC-W is a completely self-contained nitrogen-based sprinkler corrosion inhibiting system. The unit is factory assembled and tested, and is ready for connection to sprinkler system riser(s). The system contains an air compressor, filters, and a membrane device to perform nitrogen separation. The system provides dry air for system initial fill and nitrogen for filling the interior of a dry or preaction sprinkler system with nitrogen at 98% or greater purity.

The Model SC-W Cabinet contains the basic hardware for proper nitrogen generation, a manually-operated valve for directing the air compressor output to the nitrogen generation system or sending compressed air directly to the cabinet outlet, and manual adjustments for commissioning.

Each Model SC-W system requires one of two compatible nitrogen receivers: UNITED Fire Systems Model NR-5 or NR-10. This provides a reservoir of nitrogen, and reduces the number of compressor starts and the total compressor run time. This lengthens the life of the compressor and reduces utility and maintenance costs.

Give us a call at 908.688.0300 or contact us online to learn more!

NITROGEN-PAC™ Model SC-W Features and Benefits:

  • FM Approved
  • Fully factory assembled, adjusted, and tested
  • No field assembly required
  • Mounts on wall – no floor space required
  • Long-life low maintenance oilless air compressor
  • Membrane-based nitrogen generation
  • Rugged steel construction
  • Built-in air compressor cooling
  • Built-in particulate and coalescing filters
  • Single drain connection
  • Saves installation, assembly, and testing time
  • Quicker commissioning – just mount, connect, and it’s ready
  • Nitrogen generation and sprinkler initial fill (per NFPA 13) from just one unit
  • Reliable, long lasting nitrogen generation
  • Best available air drying and filtration for long life and low maintenance
  • Easy inspection and maintenance
  • Reliable, dependable protection

Give us a call at 908.688.0300 or contact us online to learn more about the NITROGEN-PAC™ SC Series.


Data Sheets +-

Manuals +-

Instruction Sheets +-

Commissioning & Maintenance Checklists +-

Sales Literature +-

Technical Notes & Important Info +-

Certifications And Approvals +-

Warranty Information +-

Did You Know?
  • Your wet-pipe sprinkler system may not be as filled with water as you expect it to be. A bubble of air may migrate to the highest point in the system, creating a very vulnerable location for internal pipe corrosion. That’s why NFPA 13 now requires that all new wet sprinkler systems be fitted with an air vent at the system’s highest point. This is a good investment for both new and existing systems. The UNITED Fire Systems Model AR-1 automatic air vent device is Factory Mutual (FM) Approved for just this function. See here for more information, and take action to prevent damaging corrosion.