When the KegŪ is full and the (Fire-Foam-500ml.) is added your KegŪ it will run about 12 to 13 minutes with the foam nozzle and about the same with the brass nozzle. 12 to 13 minutes can buy you some precious time when it comes to putting out a fire. In most cases where you have a volume pump and fire hose to deal with, by the time you prime the pump, get water to the nozzle, you might as well call the forestry people. The KegŪ has proved time and time again that first response is the answer to many expensive problems.