Discounts and technical sales help on Air Cascade Systems for fire departments, paintball, SCUBA and industry. A system may include two or more UN-ISO DOT cylinders, mounted in your facility, on a mobile air trailer or inside your fire truck. DOT UN-ISO cylinder mounting rack(s) are available for stationary and mobile applications.

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.

UN/ISO cylinders can be mounted vertically or horizontally and are used in a stationary or mobile application.

UN/ISO cylinders must be hydro-tested every ten (10) years. No 10% overfill is available with these lightweight style of cylinders. DOT exempted cylinders are hydro-tested every five (5) years but are not manufactured any longer.

AC40040A - UN/ISO 4500 PSI/310 BAR, 437 CF, 152 Lbs - 67 Kg empty, 2750 CI - 45 Liters water volume, 9.3" dia. by 56" to the top of the CGA 347 valve. Hydrostatic test pressure is 6750 psi. UN/ISO 9809-2 Specification. DOT Approved for USA use and Canadian use approved without cylinder shoulder markings. Click here for AC40040A specification.

AC40050A - UN/ISO 5000 PSI/345 BAR, 472 CF, 170 Lbs - 77 Kg empty, 2750 CI - 45 Liters water volume, 9.3" dia. by 56" to the top of the CGA 347 valve. Hydrostatic test pressure is 9000 psi. UN/ISO 9809-2 Specification. DOT Approved for USA use and Canadian use approved without cylinder shoulder markings. Click here for AC40050A specification.

AC40060A - UN/ISO 6000 PSI/414 BAR, 510 CF, 202 Lbs - 91 Kg empty, 2641 CI - 43 Liters water volume, 9.3" dia. by 56" to the top of the CGA 702 valve. Hydrostatic test pressure is 9000 psi. UN/ISO 9809-2 Specification. DOT Approved for USA use and Canadian use approved without cylinder shoulder markings. Click here for AC40060A specification.