Air cascading simply means equalizing the pressure between the cylinder to be refilled and the next lowest supply cylinder. If this doesn't get the desired pressure in the small cylinder, the supply cylinder is turned off and the next highest supply cylinder is opened and the pressure allowed to equalize between the two cylinders.

Get approximately 38 refills of 2216 PSI 45 CF SCBA cylinders from a four cylinder cascade system. This estimate of refills assumes the SCBA cylinder has 500 PSI remaining in it at the time of refilling.

Taylor-Wharton DOT cylinders offer the patented Lightweight "leak before break" technology. They can be mounted vertically or horizontally and are used in a stationary or mobile application.

Cylinders must be hydro-tested every five years. No 10% overfill is available with these lightweight style of cylinders.

4500 PSI/444 CF (AC 40040), 149 pounds empty, they measure 9 5/16" dia. by 56" to the top of the CGA 347 valve. Hydrostatic test pressure is 6750 psi. DOT Classification is DOT-E 9421-4500. Canadian permitt number - SU 4221.

6000 PSI/509 CF (AC 40060), 193 pounds empty, they measure 9 9/32" dia. by 56" to the top of the CGA 702 valve. Hydrostatic test pressure is 9000 psi. DOT Classification is DOT-E 9909-6000. Canadian permitt number - SU 4221.