Validity period of traditional fire extinguishers

In our life, we can often see fire extinguishers now, because many times we don't know when the fire will come, so there are fire extinguishers everywhere in our life. With the existence of fire extinguishers, we are free from life, but we still need to understand the effectiveness of fire extinguishers. Do any of you know?

The validity period of a fire extinguisher is usually three or five years. Generally, when you buy a fire extinguisher, you are told that it is three plus one or five plus two. In fact, he is telling you that this fire extinguisher is valid for three or five years. If this fire extinguisher is a water-based fire extinguisher, it will generally start maintenance after three years. After the first maintenance, every year thereafter.

2. The first use of another fire extinguisher is five years, that is to say, it needs maintenance after five years, and then it needs maintenance every two years. This means five plus two. After passing the inspection, the qualified label shall be affixed.

How to check whether the fire extinguisher has expired 1? There is a pressure gauge on each fire extinguisher. We can check the pressure gauge on the fire extinguisher, which is usually red, yellow and green. If the pointer of the pressure gauge is in the red area, it means that the pressure of this fire extinguisher is too small to use. At this time, you will have to replace the fire extinguisher.

2. When the pointer of the pressure gauge on your fire extinguisher has pointed to the green area, it means it is normal and can be used normally. Then there is the yellow area. At this time, the pressure is very high and can be used, but it will be better if the pressure is removed.