Equipment Selection Guide


UNITED Fire Systems is pleased to announce our FREE NITROGEN-PAC™ Equipment Selection Guide.  This easy-to-use tool is designed to determine which NITROGEN-PAC™ equipment is right for your sprinkler system(s).  Simply provide a few items of information about your sprinkler riser(s), and receive links to:

  • A customized Bill of Material,
  • Data sheets for all required NITROGEN-PAC™ components,
  • Instruction manuals, checklists, and information sheets for installation, commissioning, and maintenance,
  • Ready-to use architect & engineer specifications, along with drawing details.

Whether you are a contractor, estimator, or engineer, this tool is for you.  Follow these simple instructions to download and use the NITROGEN-PAC™ EQUIPMENT SELECTION GUIDE:


Instructions for use:

A. Click the Download Now button below.

Download Now

B. Save the file to your computer, and open using Microsoft Excel.

C. Use STEP 1 – PIPE VOLUME CALCULATOR to determine the pipe volume (in gallons) of each sprinkler riser, using pipe lengths and sizes.

D. Use STEP 2 – INDIVIDUAL SPRINKLER RISER INFORMATION to enter the required information for each sprinkler riser:

  – Type of riser (preaction or dry-pipe)

  – Pipe volume (in gallons) – information from STEP 1

  – Supervisory pressure (in PSIG)

To make it easier to gather the necessary information for this step, see our Project Survey Form.

E. Use STEP 3 – OPTIONAL COMPRESSOR FOR PREACTION SYSTEMS to decide if an external air compressor for initial-fill with air makes sense for your system.

F. Use STEP 4 – SYSTEM CHOICE to review the chosen system and click for your deliverables.


That’s it – four simple steps and you are ready to specify, install, commission, use, and maintain a NITROGEN-PAC™ system.  Refer to the INSTRUCTIONS page in the file for more detailed guidance.  Start using this valuable tool today!



For more extensive details on your system, including AutoCAD pages and MasterFormat specifications, please use:

Did You Know?
  • Galvanized piping is NOT the answer to controlling internal pipe corrosion!  Zinc (the metal used for galvanizing) corrodes inside a pipe the same way that bare steel does. In fact, breaching of the galvanized coating concentrates the corrosion reaction at one point, rapidly causing pits and pinholes. Galvanizing of pipes is ONLY intended to help with the external appearance of pipes. Don’t count on galvanizing – take positive steps to prevent internal corrosion such as NITROGEN-PAC.