What pressure are CO2 extinguishers typically tested at?

CO2 extinguishers are typically tested at a pressure of 1250 psi. This testing standard is crucial because it ensures the integrity and safety of the extinguisher under high-pressure conditions. The carbon dioxide gas is stored in a liquid form within the extinguisher, and upon activation, it expands rapidly to produce a cold, heavy gas that is effective for displacing oxygen, thus suffocating the fire.

Testing at 1250 psi helps to ensure that the cylinder can withstand extreme conditions, preventing potential failures or leaks that could compromise the extinguisher's functionality during a fire emergency. This high testing pressure aligns with industry standards and regulations, which prioritize safety and reliability in firefighting equipment.