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  • Friday's Question

    A technician is installing a copper elbow on an LP gas line. Which of the following solders should he use?
    A. Rosin core
    B. 95/5
    C. 0 % silver
    D. 15 % silver

    I know rosin core is used for electronic and wiring applications, but these others are kinda tricky. Do you guys solder propane gas lines? I've always flared copper gas lines.
    Thanks, JONESY

  • #2
    Re: Friday's Question

    I vote for "B"
    I love my plumber

    "My Hero"

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    • #3
      Re: Friday's Question

      D 15% silver solder

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      • #4
        Re: Friday's Question

        Trick question. As far as I know ya can't solder gas lines with anything unless there's been a code change in the last 20 years.
        sigpic

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        • #5
          Re: Friday's Question

          You can only braze copper gas lines so I would pick D.
          Buy cheap, buy twice.

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          • #6
            Re: Friday's Question

            The only thing I can find was in NFPA 58.

            5.8.4.1 Pipe fittings shall have a minimum pressure rating as specified in Table 5.8.4.1 and shall comply with the following.

            (1) Cast-iron pipe fittings shall not be used.
            (2) Brazing filler material shall have a melting point that exceeds 1000*F

            Andy

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            • #7
              Re: Friday's Question

              in pa it would be none of the above

              no solder of brazing fuel lines

              even if we could i would not do it
              Charlie

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              • #8
                Re: Friday's Question

                For copper lines used on gas here it has to be flared or brazed and is supposed to be type g copper. Soldering is not allowed.

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                • #9
                  Re: Friday's Question

                  Type g copper? I've heard of type k, type l, type m, and dwv, but i have never heard of type g. Is that a wall thickness reference?
                  Later, jonesy

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                  • #10
                    Re: Friday's Question

                    Probably a type. Ain't no such thing as G.
                    sigpic

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                    • #11
                      Re: Friday's Question

                      You read correct. Type G copper tube.
                      CSA B149.1, Natural Gas & Propane Installation Code, is the model code used by provincial regulatory authorities in Canada. The 2000 edition contains important changes on the Types of copper tube to be used in natural gas systems. The B149 Code Update provides the latest information on Type G/GAS tube. Local authorities should be consulted before specifying or installing any Type of copper tube.
                      http://www.coppercanada.ca/naturalgas.htm
                      http://books.google.com/books?id=gWg...esult&resnum=9

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