What are the 3 colors of a fire extinguisher pressure meter?
When the gauge of the fire extinguisher refers to the red part, it shows that the pressure in the bottle is not enough, and the extinguisher can not be used properly;When the fire extinguisher pressure indicator refers to the yellow part, it shows that the pressure is too large and dangerous;When the fire extinguisher pressure indicator refers to the green section, it shows that the fire extinguisher is normal.
Domestic fire extinguishers generally pressure gauges are divided into three grades, both three colors. When the pressure gauge pointer to red, indicating the pressure in the bottle is not enough, not the normal use of fire extinguishers; refers to the yellow part when the pressure is too large, prone to danger, that the fire extinguisher refers to the green part of the normal
