At what position on the pressure gauge is the fire extinguisher's pressure considered normal?
2 Answers
The normal pressure value is indicated by the green zone on the gauge, with pressure approximately between 1.2—1.5 MPa. Here are the relevant explanations: 1. When the pointer is in the red zone: This indicates insufficient pressure inside the cylinder, rendering the fire extinguisher unusable and requiring replacement. 2. When the pointer is in the yellow zone: This signifies excessive pressure, posing a potential hazard, and the extinguisher should be sent to a specialized facility for inspection and repair. 3. Once a fire extinguisher has been activated: Even if only a small amount has been discharged, it must be refilled according to specified requirements. Refilling should be performed by professional maintenance departments following the manufacturer's prescribed methods and requirements. Alterations to the type of extinguishing agent, weight, or driving gas pressure are not permitted.
As a long-time safety enthusiast, I often remind my friends to pay attention to the pressure gauge needle position on fire extinguishers. During normal use, the needle must be within the green zone, indicating the pressure is appropriate for effectively discharging the extinguishing agent. If the needle enters the red zone, it means the pressure is either too low or too high, which could prevent discharge or pose a danger. While the yellow zone may sometimes still be usable, it's best to have it checked. I inspect the fire extinguishers in my garage and car every quarter to ensure the needle stays in the middle green zone. Insufficient pressure can lead to failure in critical moments, which is dangerous in home or vehicle fires. Therefore, it's important to develop the habit of checking regularly—seeing green means peace of mind, and any issues should prompt immediate replacement.
