Time limit for fire extinguishers
Specific depends on the pressure gauge on the tank, if the pointer deviates from the green range, refers to the red area, it can not be used, because there is no pressure.
If it is a water based fire extinguisher, the validity is only three years. However, the fire extinguishing efficiency of this extinguisher is much more than that of dry powder, and a 580 ml water base fire extinguisher is larger than a two kg dry powder fire extinguisher.
In general, the most common joint tin powder fire extinguisher is valid for 5 years. However, because of poor vehicle environment, summer exposure, road turbulence, probably less than 5 years will be invalid.
Different types of fire extinguishers are valid for different periods. The same type of fire extinguishers, integration of aluminum cans and cans of different joint.
