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?
  • Your dry-pipe or preaction fire sprinkler system can be infected! That’s right – microbes can be lurking inside your sprinkler pipes and causing damage.  Microbiologically influenced corrosion (MIC) occurs when the right combination of moisture and microbial organisms produces rapid corrosion of steel piping from the inside out. MIC is not the only cause of steel pipe corrosion, but it is important to know about and mitigate this problem BEFORE it causes pitting, pinholes, and thinning of pipe walls. Take steps to prevent both rust and MIC by using NITROGEN-PAC.