It is a nominal duration calculated at a standard consumption rate, not a guaranteed working time. Real duration depends on the wearer’s breathing rate and workload, and hard physical work reduces it significantly. The rating is used for classification and planning; operational time should be based on measured consumption.

The 45 minute holds more air and is correspondingly larger and heavier, which is the trade: longer working duration against added weight on the wearer. Departments often run both, matching duration to the task. Both use the same 4500 PSI fill pressure.

The figures published for this cylinder are listed on this page, covering its duration rating, 4500 PSI service pressure, composite construction and 30 year service life. If your specification process needs a dimension or weight that is not shown, contact us and we will confirm it against the specific cylinder before you order rather than working from a general figure.

Weight varies by manufacturer and construction even within the same duration rating, so it should be confirmed against the specific cylinder rather than assumed from the class. Contact us with your apparatus requirement and we will confirm the figure. Composite construction is chosen precisely because it reduces wearer load against a steel equivalent.

Composite SCBA cylinders carry a maximum service life from the date of manufacture, and at the end of it the cylinder must be permanently removed from service regardless of condition or test result. A 30 year cylinder gives a longer replacement horizon than a 15 year one, which changes fleet planning and cost of ownership.

It is sold as a cylinder only, which suits fleets transferring existing valves or standardizing on one valve type. Confirm your valve is correct for this cylinder and pressure rating before ordering. We stock a valve range and can quote them together.

No. All cylinders ship empty for transport safety. Breathing air requires filling by a supplier with the correct equipment and air quality controls, which is a different service from general industrial gas filling.

Yes. We are a DOT-authorized requalifier operating hydrostatic and ultrasonic testing and visual inspection across four centers. For fleets approaching a requalification cycle this is normally the lower cost route against replacement, provided cylinders remain within service life. Fleet work is quoted per cylinder.

Yes. We supply fire departments, industrial safety programs and distributors at wholesale, with pricing improving on quantity. Send duration rating, valve requirement, quantity and delivery point for a quote with availability and freight.

An expired requalification date, reaching maximum service life, or any damage to the composite wrap including cuts, abrasion, heat damage or delamination. Composite damage is not repairable and the cylinder is retired permanently. Inspect on receipt and after any incident involving impact or heat.