Do fire extinguishers have an expiration date? - Fire Extinguishers FAQ | KT India
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FAQ

 Do fire extinguishers have an expiration date?

Answer:
Typically an expiration date is the recommended date for refining of the extinguisher. One should check the pressure on the nozzle and check if the cylinder shows signs of damage or corrosion. This is usually shorter than the lifespan of the cylinder itself. The cylinder needs to go through a hydrostatic test every 5 years or so based on the manufacturer.