275985 - Miller BreatheAir 4-Person Portable SAR Filtration Box (10 ppm Alarm)

High-Performance Grade-D Breathing Air Filtration

The Miller 275985 BreatheAir™ Portable Box is a critical component for industrial safety, designed to convert standard compressed air into Grade-D breathing air suitable for Supplied Air Respirators (SAR). Engineered for heavy-duty manufacturing and fabrication environments, this 4-person filtration system ensures that operators receive clean, breathable air free from harmful contaminants. The unit features a robust 123 CFM airflow capacity, allowing it to support up to four users simultaneously without compromising performance. It connects easily to shop air compressors via a 1/2-inch industrial interchange inlet, requiring a minimum of 75 PSIG at 60 CFM to operate effectively.

Advanced Three-Stage Filtration

The core of the BreatheAir™ system is its advanced three-stage filtration process, which guarantees the removal of the vast majority of airborne impurities. The first stage eliminates 95% of liquids and particulates down to 5.0 microns. The second stage is a high-efficiency coalescing filter that removes 99.99% of fine oil mists and particulates down to 0.01 microns. Finally, the third stage utilizes activated charcoal to remove organic vapors, odors, and tastes, ensuring the air is not only safe but comfortable to breathe. Each filter cartridge is equipped with a change indicator, eliminating guesswork and ensuring maintenance is performed exactly when needed to maintain compliance and safety.

Integrated Safety Monitoring

Safety is paramount with the Miller 275985. The unit includes an internal Carbon Monoxide (CO) monitor set to alarm at 10 ppm (USA standard). If CO levels in the air supply rise above this threshold, external warning lights and loud audible alarms are triggered immediately, reducing reaction time and preventing potential poisoning. The monitor is designed for quick calibration, taking less than two minutes, which minimizes downtime. Additionally, an automatic condensation drain helps extend the life of the filter cartridges, making this unit a reliable and cost-effective solution for maintaining respiratory safety in IDLH-free environments.