The clockwise red zone indicates an overcharged situation that could measure as much as 400 psi (2,758 kPa). A counterclockwise measurement below the safe zone, like the one on the right, means the extinguisher has lost charge and needs to be recharged to be effective.
What does the gauge on a fire extinguisher mean?
There is a gauge on most extinguishers to measure the pressure of its contents. A fire gauges extinguisher can be “overcharged” meaning the contents are under too much pressure, “discharged” meaning that there is not enough pressure to work correctly or “in the green” which means that the unit is properly charged.
How do you read a fire extinguisher rating?
Fire Extinguisher Ratings
Fire extinguishers are classified by fire type. The A, B, C rating system defines the kinds of burning materials each fire extinguisher is designed to fight. The number in front of the A, B, or C indicates the rating size of fire the unit can extinguish.
Which is the safe pressure gauge zone on a fire extinguisher?
This is to show how much pressure is in the extinguisher, sometimes the needle in the gauge can stick due to damage or moisture, this can give a false reading and needs to be checked. The gauge arrow should be in the green zone.
What does 4A 80B C mean?
Buckeye ABC Dry Chemical Extinguisher 4A:80B:C is designed for use on Class A fires (ordinary combustibles), Class B fires (flammable liquids and gases), and Class C fires (energized electrical equipment).
What is fire rating 21B?
Fire Rating. 8B. 13B. 21B. Suitable for Fire class B,C.
What does a rating of 40 on a Class B extinguisher mean?
What does a rating of 40 on a class B extinguisher mean? Sufficient extinguishing power for 40 square feet of burning fuel.
What does 5B mean on a fire extinguisher?
Example: A Fire Extinguisher with a rating of 5B:C would be able to extinguish 5 square feet of a class B fire and could also be used on a Class C fire (electrical- anything plugged in) due to it’s non-conductive properties.
What does 10a 60b C mean on a fire extinguisher?
The number 10 indicates that the extinguisher fights Class B fires as large as 10 square feet. It is safe for Class C fires.
What does 2A 10bc mean?
A fire extinguisher that is rated 2A:10 BC means it has a fire fighting capacity equivalent to: 2.5 Gallons of Water and 10 Square Feet for a BC Type Fire.