What does the pressure gauge of a properly charged Type B extinguisher indicate?

A Type B extinguisher is designed to combat fires involving flammable liquids and gases, and its effectiveness relies on being in proper working condition. The pressure gauge is an essential feature that indicates whether the extinguisher is fully charged and ready for use.

When the needle is in the green zone, it signifies that the extinguisher is adequately pressurized. This is crucial because an extinguisher that is not appropriately charged may not function correctly during an emergency, potentially leading to ineffective fire suppression or failure to discharge altogether. The green zone on the gauge typically represents the optimal pressure range necessary for the extinguisher to operate effectively.

Being aware of the pressure gauge's reading helps ensure that the extinguisher can be relied upon in a crisis. Regular checks of the gauge should be part of routine maintenance to verify that the device is in operating condition.