1. #1
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    rualfire's Avatar
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    Default Wet water / Cold Fire / Class A Foam

    Can anyone give me a breakdown of the difference between products sold under the name of "wet water" or "cold fire" and Class A foam?

    We've got several hundred gallons of the branded products in our store room. I've been adding them to our unit's without onboard foam systems at the reccomended ratio's and find that when I circulate the water through the pumps, they generate a tremendos volume of foam with a very thick consistancy.

    The lables on the product are very poor. The stuff has the desired effect of breaking down the surface tension of the water (it won't bead).

    Am I dumping pails of class A foam into our tankers?

    Thanks.

  2. #2
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    Hi rualfire,

    The short and sweet of it is "wet water" or "cold fire" are basically a watererd down class "A" foam. They do reduce surface tension. They don't work very well when a quality bubble structure is needed. They are a wetting agent. NFPA can give you better info on the specific requirements for each.

    Hope this helps.

    Be safe,

    Captain Lou
    "GOTFOAM?"

  3. #3
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    Thanks for the info..

    I've got some reading to do...

  4. #4
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    I think that "wet water" is a little different than Class A Foam.

    Wet water is meant as a water soluable lubricant and is meant to penetrate - often Wet Water is touted as helping keep pump seals lubricated, and decrease friction. How much this is true depends on who you talk to.

    Class A foam is meant to both "cling" and offer some penetration.

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