United Safety’s purpose designed Bulk Air Trailer carries 20 – 500 (10,000) cubic feet of compressed breathing air at 4500 psi. Watch this video to see how it provides a continuous supply of breathing air to workers “under mask”.
Key Benefits
- Allows long-duration tasks in toxic environments to be performed without interruption.
- Can support a large work crew.
- Easy to transport and deploy.
Air Trailer II
The Air Trailer has been re-designed in 2013 to further benefit customers with increased functionality and reliability. The next generation Storage Air Cylinders used in the Air Trailer reduces the number of cylinders in each trailer while increasing the amount of air available and generating additional storage space. Read more about Air Trailer II

















