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  1. #1
    sarabande's Avatar
    sarabande is offline Registered User
    Location : up on the moors.
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    May 2005
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    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 ?
    I think, therefore I am. I am, therefore I sail.

  2. #2
    Join Date
    Sep 2007
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    Default

    http://www.fireextinguishersonline.c...e_Extinguisher

    The simple answer is that they will freeze.

    Google is king

  3. #3
    gruntle's Avatar
    gruntle is offline Registered User
    Location : brightlingsea, but planning the next trip
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    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
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    160

    Talking Simple solution

    Warm it up by the fire before using it!

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