The simple validity period of dry powder fire extinguisher is 8 years, and the maximum is 10 years. For the validity of fire extinguisher, we need to look at it from two parts. The main reason is that the fire extinguisher is composed of the same body and internal dry powder extinguishing agent, so the shelf life of the two is different.
Dry powder fire extinguisher is a kind of fire extinguisher. According to the type of dry powder fire extinguishing agent, it can be divided into ordinary dry powder fire extinguisher and superfine dry powder fire extinguisher. According to the mobile mode, it can be divided into three types: portable, backpack and wheeled. The fire extinguisher is equipped with ammonium phosphate and other dry powder fire extinguishing agent. The dry powder fire extinguishing agent is easy to flow and dry. It is composed of inorganic salt and grinding and drying additives, which can effectively put out the initial fire.
The service life of dry powder fire extinguisher is very short. In general, its service life is 1 to 2 years, which means that the dry powder fire extinguisher placed in public places must be replaced with a new type of fire extinguishing agent every year. If it is not replaced in time, the fire extinguisher in urgent need will not be used normally.
The dry powder fire extinguisher uses carbon dioxide gas or nitrogen gas as the power to eject the dry powder in the cylinder, which can put out the general fire and the fire caused by the combustion of oil and gas.
