Which of the following is NOT a characteristic of stored pressure extinguishers?

Stored pressure extinguishers are versatile devices that can be used on various types of fires, not just Class A fires. They are typically designed to handle multiple fire classes, including A (ordinary combustibles), B (flammable liquids), C (electrical), and sometimes D (combustible metals), depending on the specific extinguisher. This multi-class capability makes them suitable for a range of environments, enhancing their utility in fire risk situations.

In addition to their versatility, stored pressure extinguishers feature an integrated expelling agent, a pressure gauge, and are recognized for their portability. The integrated expelling agent allows for consistent discharge of the extinguishing agent when activated. The presence of a pressure gauge provides users with a quick visual reference to check whether the extinguisher is adequately charged and ready for use. Lastly, their design facilitates ease of transport, making them practical for swift access in emergencies.

Understanding that stored pressure extinguishers serve numerous fire scenarios helps clarify why saying they are designed solely for Class A fires is inaccurate. This fundamental characteristic is essential for selecting the right extinguisher for a given environment and reinforces the importance of familiarization with the specifications of firefighting equipment.