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NG pipe capacities for 10PSI

JUGHNE Member Posts: 10,571
Can anyone direct me to info on sizing NG gas piping for 10 PSI (capacities/length of black pipe at 10 PSI)??   Thanks for your help.


  • Tim McElwain
    Tim McElwain Member Posts: 4,588
    They are found

    in ANSI Z223.1, NFPA 54 National Fuel Gas Code Table 6.3a Schedule 40 Metallic Pipe inlet pressure 10 PSI with a 1.0 pressure drop for PROPANE at specific gravity 1.50.

    For NATURAL GAS the charts only go up to 5 PSI.

    What is this for?
    JUGHNE Member Posts: 10,571
    edited October 2013
    Thanks Tim for checking

    This is to advise/assist the local gas utility to relocate UG NG 10 PSI (I'm told) to an above ground location on the outside of a high school gym.  The 17# to 10# reg.  is 200' from the 10# to 4 ounces reg.  The load of 120,000 BTUH @ 4 ounces is 70' from the 10#/ounces reg.  The pipe size between regs is in question.  I have the 10# LPG charts and the 5 PSI NG charting.  Utility says this is a 10 # line.  Thanks again.

    PS. the existing line is 1 1/4" iron pipe UG;  I'm thinking they could go quite smaller @ 10 PSI for the 200'.
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