How long does the fire extinguisher need to be stamped?
So, no matter what type of fire extinguisher, do not consider the issue of additional pressure. As an emergency training instructor, I am not in favor of supplementary pressure, in fact, re filling the fire extinguisher in the shop, range and duration can not be compared with the original, in the event of a fire, too late for regrets!
5 years later, according to the fire protection requirements, once a year, in fact, that is, to the firefighters to see if the pressure gauge is still not in the green range, there is no serious corrosion of the tank and so on. If not, continue to be qualified. Until 10 years, scrap.If it is a water-based fire extinguisher, the shelf life is 3 years. After expiration, it can continue to be certified for 2 years and be scrapped for 5 years.
General dry powder fire extinguisher, after leaving the factory, the shelf life is 5 years, as long as the 5 years, the pressure gauge pointer is still green range, that is qualified, no need to add any pressure.
