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    mazhar1969's Avatar
    mazhar1969 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Apr 9, 2014, 07:43 AM
    Friction rate
    What is the friction rate in pipes?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Apr 9, 2014, 08:23 AM
    Size of pipe? Water pressure? Why do you want to know? If this is a new installation can you give me more information? Back to you, Tom
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #3

    Apr 9, 2014, 10:00 AM
    Friction also depends on the material of the pipe.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #4

    Apr 10, 2014, 05:50 AM
    Good point Brian,
    A iron pipe produces more production more friction than a plastic one. Regards, Tom
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #5

    Apr 10, 2014, 04:50 PM
    You gave us NO information in your question.

    To figure out friction in water pipe, engineers use so called "Hazen Williams" formula. To work with the formula, you need to know the following four values: 1. Material of pipe 2. Flow 3. Friction Head loss 4. Size of pipe. In addition, each installed fitting has a "friction loss" value assigned to it. So you also need to know what fittings are used and how many of them.

    Hope that helps. Back to you / Milo
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