Fire Extinguisher Pressure Gauges: The Pressure Sentinels for Fire Safety

The core value of a fire extinguisher pressure gauge lies in intuitively showing the internal dry powder pressure status through three color-coded zones—red, yellow and green—allowing users to quickly judge the usability of the fire extinguisher. The red zone is the "failure warning zone": if the pointer points here, it means the internal pressure of the fire extinguisher is insufficient, the dry powder cannot be sprayed normally, and the fire extinguisher has lost its fire-extinguishing capacity. In this case, it is necessary to refill the dry powder at a regular fire equipment store in a timely manner. The green zone is the "safe working zone": this narrow zone is the ideal working state of the fire extinguisher, and a pointer here indicates normal pressure, enabling the fire extinguisher to be put into fire fighting at any time. The yellow zone is the "dangerous overpressure zone": although the dry powder can still be sprayed at this time, the excessive internal pressure poses an explosion risk. Even if the fire extinguisher is not completely invalid, it is necessary to send it to a professional institution for inspection and refilling as soon as possible, especially for household fire extinguishers, this state must be avoided.