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calculation of the need of foam concentrate

auspiciousness to you all,
some of the people says that sharing knowledge is a kind of good deed.all of the members of this site are requested to share your knowledge of foam.
i would like to know how to calculate the need of foam concentrate for 1 hour with 2 inches diameter nozzle.if i get the formula to ,it will be more ok.
also i would like to know what website can i get the detail information of foam concentrate calculation.
as for me, i am a fresher in fire fighting field and sorry for my absence in discussion cause of my lack of knowledge in there.
i look forward to all of your precious advices concern with foam calculation.

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PermalinkReply byLarry LasichonMarch 10, 2010 at 2:56pm

What you need to know is; what is the flow in GPM and how is the foam being introduced to the water. Are you batch mixing (filling a storage tank with water and adding the foam in the percentage called for) or using a eductor to pump the foam mix from a container and into the water stream. All fire foam is, as a rule, mixed at a recommended percentage, which is on the container.

Hope this helps.

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