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

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.

The Auto-Air™ Cart

The Auto-Air™ Cart provides a systems approach to breathing air filtration.  One cart contains our Grade-D filtration unit, and either a pneumatic or electric reserve air system and twin air cylinder storage.  Choose a cart size based on the desired amount of reserve air needed to allow workers to safely egress the work area.  Carts can operate with either 2400 or 5000psi cylinders. The pneumatic version should be selected for hazardous environments. 

 
System mounted on 2300 series large cylinder cart

Model B10023HTAP

The custom Auto-Air™ Cart, pictured left, utilizes our Ergo-Air® Cart frame. The unit holds two large storage air cylinders and provides ease of mobility for use in plant air operations. Any size Auto-Air™ Breather Box® can be added to the Ergo-Air® Cart frame.

Consult Customer Service to Design a Cart to Meet Your Application

Intrinsically Safe Auto-Air™ Cart
Complete Pneumatic Operation

Note: Intrinsically Safe (IS) CO Monitors are CSA Approved for Class I, Division 1, Groups C and D Environments. Units are "DC" (9-Volt) Operation Only 

Applications

• Refineries
• Chemical and Pharmaceutical manufacturing
• Refueling applications
• Tank cleaning
• Decon required situations
• Grain silo entry

All lights and remote alarms are pneumatically operated and spark free. The intrinsically safe CO monitor is CSA approved and operates on 9-volt DC batteries only.

Standard Electric Model

Applications

• Confined space entry
• Hazardous material handling
• Boiler cleaning operations
• Nuclear work
• Fuel cell maintenance
• Tank entry and cleaning

All HTAA Series Standard Carts Hold Two 87 or 60CF Air Cylinders.

Large Cylinder Carts Pictured are for Long Duration Applications.

System mounted on small cylinder cart

Model BB50-HTAA

Breathing Air Panels for Permanent Mounting Applications

Permanent mount Grade-D filtration systems are designed to provide breathing air for a specific number of workers.  The system filters compressor air to provide respirator users with Grade-D quality air.  The first stage element filters bulk water and particulate, the second stage coalescing filter removes atomized oils and ultra-fine particulate, and the third stage removes organic vapors and odors.  Filter change indicators are standard on all three filtration stages.  Filtration efficiency is 99.99% @ .01 microns.  A built-in carbon monoxide monitor operates on 9-volt DC, 115 VAC, or 8-16 VDC for continuous detection.  A high intensity audible alarm and light signals the workers of high CO content in their breathing air.  A 115 VAC electrical conduit box is provided as standard to provide AC power in and connection for AC powered remote alarms.  Filtration components are mounted on powder coated steel panel.

All portable and fixed breathing air filtration systems meet or exceed OSHA 1910.134, Canadian Z180.1 Breathing Air Standards and British Standard BS-EN12021:1999 "Respiratory Protective Devices"

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.

                    BB50-COPM

BB15-COPM 15cfm
Single Worker Grade-D Filtration
16"W x 14.5"H x 5.25"D

Intrinsically Safe CSA Approved Models Available for Class 1, Division 1, Groups C and D Environments.  Units are "DC" (9-Volt) Operation Only.

BB30-COPM
30cfm Two Worker Grade-D Filtration

Custom Panel Sizes are Available Up to 3000cfm Capacity!

1200cfm Custom Breathing Air Panel