 There was a valve between the fuel and air tanks.A rubber fuel hose connected the assembly with a fuel gun, which was a pipe 114-cm long, fitted with a valve at the muzzle, operated with a handle.After opening a fuel gun valve, the fuel was propelled with compressed air and ignited by a simple mesh basket wrapped with a flaming rope, at the muzzle of the fuel gun (the rope had to be ignited before the weapon could be used).