After the water-based fire extinguisher is sprayed, on the one hand, water mist is formed to absorb a lot of heat and quickly reduce the fire temperature; On the other hand, the surfactant rapidly expands into an uninterrupted water film on the surface of combustibles to isolate oxygen and extinguish the fire by suffocation. At the same time, it also has a strong penetration, which can penetrate into the interior of combustibles and play a role in flame retardancy and anti reburning.

Because of the good spreading performance of water mist, it is particularly suitable for extinguishing the self ignition fire in the automobile hood. The conventional dry powder extinguisher can only work if the hood is opened to find the fire point, but there is a risk of deflagration and personal injury when the hood is opened. The water-based fire extinguisher can be sprayed directly from the gap without opening the cover, and the water mist can spread automatically to extinguish the fire.

Although the conventional dry powder extinguisher can extinguish the fire, if the place extinguished meets the fire again, it will immediately re ignite. The water-based fire extinguisher has excellent resistance to re ignition, and the place sprayed can no longer be ignited. Therefore, in addition to direct fire fighting, it can also be sprayed around the fire site in advance to prevent the spread of fire.