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 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.
Your dry-pipe or preaction system piping may look brand new on the outside, but what about inside? Residual water and oxygen in the pressurized air could be rusting the interior of that pipe right now. This rust can weaken the pipe, cause pinholes to form, and even clog up the sprinkler heads in the event of a fire. NFPA 25 – Standard for the Inspection, Testing and Maintenance of Water-Based Fire Protection Systems mandates internal inspection of sprinkler pipes at least every 5 years. Are your pipes rusty? Have them internally inspected by a qualified fire protection contractor before it’s too late.