What fire is the foam extinguisher suitable for?
Foam extinguishing agents are divided into high expansion foam and low expansion foam. Foamability of high expansion foam extinguishing agent of high (201-1000 times), can quickly fill the fire space in a short period of time, especially suitable for large space fire, and has the advantages of rapid fire; and low expansion foam foam covered in fire depends mainly on the surface of the object will be isolated from the air and fire, with water stains, it is for the flow of fire incapable of action, because there is water, if used for fire extinguishing electrified so there is leakage of electric shock hazard.
Range of fire:First, a class of solid fires, such as wood, cotton and other solid substances; B class substances such as gasoline, kerosene, vegetable oil, such as the beginning of fire.Two, class B fires, such as gasoline, diesel and other liquid fires (high expansion foam extinguisher)Three, class E live equipment depends on the situation, if the low-voltage electrical equipment, there is no problem, such as computer systems, mainframe rooms, general small equipment.
When using foam fire extinguisher, it can spray out a large amount of carbon dioxide and foam. They can adhere to the fuel, insulate the fuel from the air, and achieve the purpose of extinguishing the fire.
