If a stored pressure fire extinguisher cartridge is how much below the stamped weight, should it be replaced?

A stored pressure fire extinguisher cartridge is designed to maintain a specific pressure and weight to ensure it operates effectively in an emergency. When a cartridge is found to be below its stamped weight by a certain amount, it indicates that the pressurizing agent may have leaked out, rendering it less effective or even unusable.

The standard for replacement of a stored pressure fire extinguisher cartridge is set to 14 grams below the stamped weight. This threshold is significant because it balances the need for safety and readiness while accounting for the normal variations in pressure that might occur in the cartridge. If a cartridge is found to be below this weight, it is likely that the functionality and effectiveness of the extinguisher could be compromised, which is why replacement is recommended at this level. Regular checks and maintenance of fire extinguishers are crucial to ensure they can perform properly in case of a fire emergency.