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John Lambert
Ruckersville, VA, USA
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Status: Big Time Sailor
Qualified days: 9
Warning about Dry Chemical fire extinguishers
Posted 2017, May 26 23:14
It may have changed by now, but it used to be that if you gave a little squirt out of a dry chemical fire extinguisher, such as to test it, the remaining pressure would slowly leak out, leaving it useless when a fire occurred. So, if you ever squirt from a dry-chem extinguisher, don't be fooled by it still having a high pressure reading -- check the pressure gauge again a few days later. If the pressure is leaking, you need to have it re-serviced by a professional.
This warning does not apply to CO2 fire extinguishers.