Innovation in Air Distribution
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| Introducing The BB60 Series Breather Box®
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:
Key Changes from the BB50 Series:
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.
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• All portable and fixed breathing air filtration systems meet or exceed OSHA 1910.134, Canadian Z180.1 Breathing Air Standards and British Standard |
The Original Breather Box®
High Performance Portable Grade-D Breathing Air Filtration System 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
Contact Customer Service for Details
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Typical Elements of a Breathing Air System Compressor Grade-D Filtration Air Distribution(POA) RespiratorThe 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. |
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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. |
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Model B10023HTAP
Consult Customer Service to Design a Cart to Meet Your Application |
Intrinsically Safe Auto-Air™ Cart 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
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.  The Auto-Air™ Cart
Standard Electric Model Applications
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
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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
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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. |
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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 |
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BB15-COPM 15cfm |
Intrinsically Safe CSA Approved Models Available for Class 1, Division 1, Groups C and D Environments. Units are "DC" (9-Volt) Operation Only. |
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BB30-COPM |
Custom Panel Sizes are Available Up to 3000cfm Capacity!
1200cfm Custom Breathing Air Panel |
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Portable Pre-Filter
PF-240 |
Designed for use with compressors that discharge a large volume of oil and water. Ideal for use in humid climates.
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Replacement Filters
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BB15 Series BB15-AW BB15-CW BB15-DW BB15-FKW |
Replacement particulate filter - Stage 1 Replacement coalescing filter - Stage 2 Replacement charcoal filter - Stage 3 Filter kit for BB15-CO series models Contain 1 ea. "A", "C, and "D" replacement filter |
BB50 Series BB50-A BB50-C BB50-D BB50-FK |
Replacement particulate filter - Stage 1 Replacement coalescing filter - Stage 2 Replacement charcoal filter - Stage 3 Filter kit for BB50-CO series models Contain 1 ea. "A", "C, and "D" replacement filter |
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BB30 Series BB30-A BB30-C BB30-D BB30-FK
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Replacement particulate filter - Stage 1 Replacement coalescing filter - Stage 2 Replacement charcoal filter - Stage 3 Filter kit for BB30-CO series models Contain 1 ea. "A", "C, and "D" replacement filter |
BB75 Series BB75-A BB75-C BB75-D BB75-FK |
Replacement particulate filter - Stage 1 Replacement coalescing filter - Stage 2 Replacement charcoal filter - Stage 3 Filter kit for BB75-CO series models Contain 1 ea. "A", "C, and "D" replacement filter |
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BB100 Series BB100-A BB100-C BB100-D BB100-FK |
Replacement particulate filter - Stage 1 Replacement coalescing filter - Stage 2 Replacement charcoal filter - Stage 3 Filter kit for BB100-CO series models Contain 1 ea. "A", "C, and "D" replacement filter |
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Airline Monitor Calibration Kits
Air Systems' Carbon Monoxide/Oxygen Calibration kits are available in two sizes, 17 liter and 103 liter. The cylinders are disposable. All airline monitors should be calibrated on a monthly basis or if the accuracy of the monitor is in question. Use only Air Systems' gas concentration or an inaccurate calibration may occur.
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BBK-20 17 Liter Cylinder |
BBK-20103 103 Liter Cylinder |
Use only Genuine Air Systems Calibration Gas when replacing cylinders
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 BBG-20 |
BBG-00
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QUICK-CONNECT COUPLINGS The couplings pictured above are the most popular styles used on airline respirators. A coupling, which is made up of a socket and a plug, is also called a “QD” or “fitting” and comes in various socket (female) and plug (male) sizes. Couplings can have male, female, or hose barb ends for different types of connection. Many manufacturers make interchangeable (equal) couplings that will fit another manufacturer’s style; most manufacturers make an interchange style of coupling that is compatible with other brands on the market. |
BREATHING AIR HOSE ٠3/8", 1/2", 3/4" ID In Stock ٠Specify desired coupling fitting size and length when ordering 
HIGH PRESSURE HOSES ARE MADE TO ORDER UP TO 6000psi |
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Breathing Air Hose Reels
Breathing air hose must be ordered separately. All reels can be supplied with hose installed.
Hose reels can be mounted on roller carts.
THERE ARE MANY CUSTOM OPTIONS AVAILABLE. CONSULT OUR CUSTOMER SERVICE
DEPARTMENT WITH YOUR REQUIREMENTS.
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Model HR-500MC |
Model HR-100M |
Model HR-50 |
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Remote Alarms
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Remote Alarms act as a valuable early warning device for the isolated worker and allows him to make a safe egress when a system fault alarm occurs.
These remote alarm units have been designed to duplicate local alarms found on the primary equipment such as the Breather Box™, to signal workers in a remote location that there is an alarm condition with their system.
Note: Portable Breather Box® units require DC alarms. Wall mount filter panels require AC alarms.
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Model 50-ALMST |
Model ALMSTH120 |
Models Available:
- Standard audible, alarm, 90dbA
- High intensity audible, 123dbA
- Audible and visual combination units
- Explosion-proof alarm
- Wall mount alarm