Originally posted by FyredUp
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nozzle psi, gpm ect
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Originally posted by TRUCK61 View PostYour best bet is to get a portable flow meter and go from there. We found out different discharges had more or less F/L or hose from different manufacturers have different F/L too. Just a thought we did this and learned a lot because we had real GPM at real pressures.
You'll find if you do your own flow testing with the trucks your department has and the hose you use you'll come a lot closer to what your pump pressures need to be for a given hose stretch.
Make sure you document your findings and print them, laminate them and tape them somewhere close to the pump panel so every member that is engineering any given day can quickly use it for reference.
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Originally posted by BenFireFan View PostOne of the best little portable tools I have found to help with this is a little slide chart thing that Task Force Tips puts out that gets into critical application rates, information based on the National Fire Academy formula for fire flows. It also has a chart for friction losses on different hoses and nozzle pressures, and the other side is all about foam applications. The print is a little small, but there is a great deal of information on it, and it still works fine after you get it wet. I think you can just call TFT and get one free.
Akron and Elkhart both have the same things. TFT copied it from them.
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The water flow slide chart
One of the best little portable tools I have found to help with this is a little slide chart thing that Task Force Tips puts out that gets into critical application rates, information based on the National Fire Academy formula for fire flows. It also has a chart for friction losses on different hoses and nozzle pressures, and the other side is all about foam applications. The print is a little small, but there is a great deal of information on it, and it still works fine after you get it wet. I think you can just call TFT and get one free.
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Your best bet is to get a portable flow meter and go from there. We found out different discharges had more or less F/L or hose from different manufacturers have different F/L too. Just a thought we did this and learned a lot because we had real GPM at real pressures.
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nozzle psi, gpm ect
can someone hook me up with a good article or book about nozzle psi and gpm and friction loss and all that jazz, thanx!Tags: None
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