Verification of service collars were invented so that owners and AHJs have a method to determine when an extinguisher valve has been removed for recharge or internal examination. The design of the collar requires the valve to be removed in order for the collar to be installed around the neck of the container.
Whenever you remove a valve from an extinguisher, make sure you install the correct collar matching the extinguisher neck. Recording accurate information on the collar will allow the owner and the AHJ to enforce the code, which will help ensure safety wherever the extinguisher is installed.
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