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  1. #1
    Join Date
    May 2005
    Location
    up on the moors.
    Posts
    28,011

    Default frozen fire extinguishers ?

    Though the domestic fire extinguishers are mainly in the house, I wonder what happens tp FXs when it gets really cold ?

    In particular, what happens to AFF mixture please ?

  2. #2
    Join Date
    Sep 2007
    Location
    Solent
    Posts
    4,939

    Default

    Clicky

    The simple answer is that they will freeze.

    Google is king

  3. #3
    Join Date
    Dec 2009
    Location
    brightlingsea, but planning the next trip
    Posts
    78

    Default

    I'm reliably informed by someone who knows about these things that AFFF concentrate has a freezing point of -20C, but it's diluted with water in the extinguisher (about 5% AFFF). This will raise the freezing point, but we're not sure what to. It also depends on the type of AFFF concentrate, as they have different characteristics.

    As an aside, the foaming agent in extinguishers used to be made of Ox blood. It put fires out, but stank to high heaven

  4. #4
    Join Date
    Mar 2005
    Location
    Berkshire
    Posts
    163

    Talking Simple solution

    Warm it up by the fire before using it!

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