A description fig1 shows a fireman using conventional firefighting equipment at the scene of a fire pumper truck 2 provides water to douse the fire a first hose 4 approximately 15 50 feet long is quickly attached to the water reservoir in the truck when a fireman 6 is ready to enter the burning building an attack line 8 approximately 150 feet long is attached to first hose 4 first hose 4 and attack line 8 are of similar construction and have the same diameter typically 11 2 13 4 2 or 21 2 inches first hose 4 and attack line 8 typically have a maximum pressure rating of 300 psig water flowing through the hoses is directed at the fire by nozzle 9 to protect himself from smoke and toxic fumes fireman 6 invariably wears emergency breathing apparatus consisting of compressed air tank 10 connected by tank hose 12 to a regulator 14 which controls the flow rate and pressure of air into mask hose 16 leading to breathing mask 18 tank 10 generally contains only approximately 30 minutes worth of air regulator 14 is worn on belt 20 so that the fireman can turn air flow on and off as conditions require in order to conserve the air supply fireman 6 also usually carries a two way radio to communicate with firemen outside the building in fig1 elements comprising the air delivery system of the present.