Is it possible for a stored pressure fire extinguisher to be over-pressurized?

A stored pressure fire extinguisher can indeed be over-pressurized, as indicated in the chosen response. Various factors contribute to this situation, including environmental conditions—such as extreme heat or the possibility of a malfunction in the pressure relief valve. These scenarios can lead a stored pressure extinguisher to exceed the recommended PSI levels.

Manufacturers do include safety features like pressure relief valves, but these mechanisms are not foolproof and depend on proper maintenance and environmental considerations. If a stored pressure extinguisher is subjected to conditions such as significant heat increases, the internal pressure may rise enough to push the pressure beyond safe levels, leading to the risk of the extinguisher bursting or malfunctioning. Understanding the potential for over-pressurization is crucial for proper maintenance and safety practices with fire extinguishers.