SPRINKLER ACCESSORIES

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 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.

The FM approved United Fire Systems Model AR-1 Wet-Pipe Fire Sprinkler System Air Release is a device for automatically releasing the trapped air from the high point(s) of a wet sprinkler system. Trapped air contains oxygen, which, when combined with water, is the primary cause of internal pipe corrosion. This corrosion can lead to pipe blockage, leaks, and pipe failure. The Model AR-1 air release is installed at the system high point(s). Air is vented until water reaches the internal float valve, which automatically closes the device to prevent water release.

The UNITED Fire Systems Riser-Mount Air Compressor Model RMAC-LP is a device that automatically provides compressed air for preaction fire sprinkler and dry-pipe fire sprinkler systems. These single phase compressors are equipped with an electric motor, oil-less pump, compressor control pressure switch, relief valve, and bracket kit to mount the device directly onto the sprinkler riser above the preaction or dry-pipe valve. It can also be floor- or wall-mounted.