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NITROGEN AND AIR MAINTENANCE DEVICE

The FM Approved UNITED Fire Systems Nitrogen and Air Maintenance Device Model NAMD-1 is a device designed to automatically regulate and maintain the flow of air or nitrogen into dry-pipe sprinkler systems or preaction sprinkler pipe.  The air or nitrogen pressure flows through a regulator so that upon activation of a sprinkler head, the air or nitrogen pressure will not interfere with the operation of the sprinkler valve or lengthen the time until the piping fills with water.  Shutoff and bypass ball valves are provided to permit initial-fill of the pipe with air, in accordance with the NFPA 13 mandated time requirement of 30 minutes or less. A “Y” strainer protects the regulator from particulate matter.

Features and Benefits

  • FM Approved – Complies with NFPA 13 component listing requirement.
  • Designed Specifically For Nitrogen – Provides the accuracy, precision, repeatability, and flow needed for supply of nitrogen. Superior to devices meant for air only.
  • High-Precision Pressure Regulator – Balanced design minimizes effect of inlet pressure variation on outlet pressure.
  • Pressure Gauge – Included to make adjustment easy.
  • Strainer – Helps prevent regulator damage from incoming gas contamination.
  • Backflow Prevention Device – Prevents problems caused by pressure changes.
  • Large Flow Range – Capable of providing nitrogen to both small and large systems.
  • Wide Span – Capable of providing consistent flow over a wide span of inlet pressures – no need for multi-stage regulation.

Contact UNITED Fire Systems Today

Give us a call at 908.688.0300 or contact us online to request more information about our Sprinkler Accessories.


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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.