Air Systems International introduced the first portable breathing air filtration system in 1984 that was used in the closed position-the Breather Box^®. That product, called the BB50-CO, has been the state of the art for breathing air filtration for over 40 years. Today in 2025, we have improved our breathing air portable breathing filtration unit to meet the demands of the 21st century. Here is a few of the highlights of the upgraded new Breather Box^®, BB60-CO, with improvements over the BB50-CO unit and designed to fit in the existing portable Breather Box^® at the same cost.

BB60-CO Key Details:

• Carbon Monoxide (CO) Monitor
• CO/O₂ Monitor Available
• Intrinsically Safe CO or CO/O₂ Monitors Available
• Incoming Air Plug ½” Industrial Interchange
• Two Automatic Drains with Discharge Tubes
• Remote Alarm Receptacle
• External Warning Lights and Alarm

 Key Changes from the BB50 Series:

1.  Increased filtration capacity in excess of 60 cfm with auto drains in the first two filters
2.  Filtration removes particulates at 99.9999% and oil removal efficiency at 99.8%
3.  Less pressure drop on each filter stage with differential pressure indicators on each filter
4.  Filtration has compact design with higher performance utilizing metal and polymers
5.  Each filter uses a polymer bowl locking system (no metal bowl guard like the old filter system)
6.  New filters operate in temperatures from 23 degrees F (-5ºC) up to 140 degrees F (60ºC)

Ordering Information:

BB60-CO Series

BB60-CO - Breather Box®, 60 cfm, 79 cfm flow capacity, 4 couplings

BA-60 - Blast-Air™ Cart, 60 cfm, 79 cfm flow capacity, 4 couplings

BB60-COAA - Auto-Air™ Breather Box®, 60 cfm, 115 VAC, 79 cfm flow capacity, 4 couplings

BB60-COIS - Breather Box®, Intrinsically Safe, 60 cfm, 79 cfm flow capacity, 4 couplings

BB60-COPM - Grade-D breathing air panel, 60 cfm, 79 cfm flow capacity, 4 couplings

BB60 Series Filter Replacements

BB60-FK - Filter kit for BB60 Series models - Contains 1 ea. “A”, “C”, and “D” replacement filters

BB60-A - Particulate filter - Stage 1 (“A” Filter)

BB60-C - Coalescing filter - Stage 2 (“C” Filter)

BB60-D - Charcoal filter - Stage 3 (“D” Filter) 

For those with BB50 models, don’t be alarmed.

We’ll be stocking replacement filter elements for the next few years.

The BB60-CO will replace the BB50-CO in our product line

starting March 2025 at the same price as the BB50-CO. 

Acceptance of purchase orders for BB50-CO and other BB50 Series Breather Box^®

Products will continue through April 30, 2025, and inventory

for those will be on a first come first serve basis.

• All portable and fixed breathing air filtration systems meet or exceed OSHA 1910.134, Canadian Z180.1 Breathing Air Standards and British Standard
BS-EN 12021:1999 “RESPIRATORY PROTECTIVE DEVICES”

• All filtration units are designed to flow the NIOSH maximum capacity per worker

• Air Systems’ provides at NO CHARGE your first lab certified air quality test of your new breathing air filtration device.  Contact Customer Service for details.

The Breather Box® is a portable Grade-D filtration system designed to provide breathing air for a specific number of workers.   The system filters incoming air from a compressor to provide ­respirator users with Grade-D quality air and ­monitors for CO and/or Oxygen.

The first stage element filters bulk water and particulate and has an auto drain.  The second stage coalescing filter eliminates atomized oils, mists, ultra-fine particulates, and has an auto drain.  The third stage filter removes organic vapors and odors and has a manual drain.  Filter change indicators are standard on all three stages of filtration.  Filtration efficiency is 99.99% @ .01 micron.  All Breather Boxes®  are designed to be used in the upright and closed position to prevent internal contamination.

The standard carbon monoxide (CO) airline monitor operates on disposable 9-volt batteries, 8-16 volt DC, or 115 VAC for continuous air monitoring.  An external audible alarm and light signals the workers of high CO content.  A remote alarm jack is provided on all models except for Model BB15-CO.  Point-of-Attachment (POA) boxes can extend respirator usage beyond 300 feet.

 Custom Designed Breather Box® Options 

• Clear View Windows
• Independent Regulators to allow different respirators and lengths of hoses to be used simultaneously
• Fully Automated Reserve Air Systems
• Low Pressure Alarms

Contact Customer Service for Details

View Ordering Info

Typical Elements of a Breathing Air System

  Compressor                  Grade-D Filtration            Air Distribution(POA)       Respirator

The above pictured items make up a typical Grade-D breathing air system. Depending on the number of workers to be served by the system and whether the system needs to be portable or a fixed plant system, the size and complexity of the system may change. However, the basic elements above must be present. In order to properly size the breathing air system, it is absolutely essential that the user’s first decision is to decide the type and quantity of airline respirator(s) to be used. A quick recap of the airline respirator types and their required flow and pressure requirements is essential. All airline respirators are referred to by NIOSH as Type-C or Type-CE respirators. NIOSH approved CE respirators are designed for abrasive blasting but still require the same air flow as Type-C respirators.