Video: Fire guns spray water through concrete walls, iron doors

This is PyroLance fire hydrant gun developed by PyroLance company, based in Florida, USA.

PyroLance fire gun.

Extremely high pressure water injection equipment can penetrate concrete walls, or metal doors, to help improve fire extinguishing capabilities, especially in hard-to-reach fires. At the same time, ensuring safety for firefighters, the device will spray water through a small 6mm wide hole to help put out the fire and cool the inside. Significantly reduces the risk of backdraft .

Backdraft is the phenomenon of a sudden fire that explodes and causes a big explosion due to the sudden air access to the fire through ventilation such as opening the door, breaking the wall .