What type of extinguishers are tested at original factory test pressure?

Cartridge Operated Extinguishers are tested at their original factory test pressure to ensure their reliability and safety during operation. These extinguishers utilize a separate cartridge filled with a propellant, which is activated to release extinguishing agent. The factory test pressure is critical because it checks the integrity of the cylinder walls and bonding of components under high-pressure conditions, ensuring that these extinguishers can safely operate without failure when needed.

The rigorous testing standard helps to confirm that the extinguisher will perform effectively in an emergency scenario, providing confidence to users about their safety measures. High-quality performance and reliability are essential in fire suppression equipment, making the factory testing an important step in the production process for cartridge operated types.