Foam fire extinguisher can be identified by seeing the word “Foam” printed over a cream rectangle in their body.
This is basically water based with foam content which has the quick flame knock- down as well as blanketing effect. It cools the fire and seals the vapors and stops re-ignition.
Foam Fire Extinguisher used for preventing class A and B fires.
When this is used against Class A fires, the user can just point and spray it, if it is used on Class B fires it should not be sprayed directly into flammable liquid. This may cause the fire to push and spread to its surroundings. It is recommended to spray the foam nearby which can build up and flow across it.
NOTE: Foam Fire Extinguisher should not be used on chip / fat pan fires. Also it is not suitable to be used in electrical fires, but when sprayed accidently it is less hazardous when compared to water.
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