I. Working Principle

The PF4 high-expansion foam fire extinguishing unit is primarily composed of a storage tank, a high-expansion foam generator, and a vehicle/fixed frame. In use, connect one end of the firehose to the fire truck or hydrant, and the other end to the generator's inlet. Then, open the hydrant; water passes through the turbine, rotating the fan. The spray head sprays the mixed liquid onto the generator's foaming mesh. The fan's wind blows the foam liquid on the mesh into numerous bubbles, covering or submerging the burning material. The foam's covering and cooling, as well as asphyxiating effects, achieve the fire extinguishing goal.

II. Main Technical Parameters