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  • Change to 2lb nat gas system

    Do any of you guys get into changing old 1/4 nat gas systems over to 2lb?

  • #2
    Re: Change to 2lb nat gas system

    never changed it, just installed it from the beginning. we would fab and install up to 4'' ips. beyound that it either went to medium pressure or was welded.

    other than regulators and venting. all we needed was a letter from the gas company and proper testing and warning tags,

    makes for a much smaller gas main and faster install because of that.

    i wouldn't waste my time for anything 2'' and under at this point.

    rick.
    phoebe it is

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    • #3
      Re: Change to 2lb nat gas system

      I have a job that the new home owners want to install a gas range and grill on their deck. They only have a 1" main and the range puts them over what the 1" will handle so I have been taking a gas class for the last month since I have been getting so much city work and every thing is gas and old and it has been 6 years since I gone thru a gas class. The guys that teach the class worked for the local gas company since the sixties and told me to call the gas company and see if 2lb is available in the area if so install a 2lb regulator then the 1" main can handle the gas and size two lines for the extra appliances! This really opens the door to adding gas appliances to an older 1/4 lb system.

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      • #4
        Re: Change to 2lb nat gas system

        remember that your appliance stubs will all need a regulator since i doubt the footage savings will allow for just 1 regulator.

        rick.
        phoebe it is

        Comment


        • #5
          Re: Change to 2lb nat gas system

          I always end up putting secondary regulators on any system over .5 PSI. By the time you do all of the regulators it is cheaper to just increase the yard line size where necessary but each situation is different for sure

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          • #6
            Re: Change to 2lb nat gas system

            The regulator would go before the 1st tee all existing piping is already sized to 1/4 lb and regulator need to be adjusted down to 9" or 8" w.c. on initial start up. Am I not understanding what you are saying?

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            • #7
              Re: Change to 2lb nat gas system

              what is the footage from the meter to the first tee?

              i doubt that it's going to be enough to add the extra demand with your new fixtures.

              can you draw an isometric with footage and btu's and post it.

              rick.
              phoebe it is

              Comment


              • #8
                Re: Change to 2lb nat gas system

                I have to do that to see what the new line will be to price it out. But that is going to have to be tomorrow as it aint 10:00 here. seeya

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                • #9
                  Re: Change to 2lb nat gas system

                  Originally posted by Clipper City Plumber View Post
                  The regulator would go before the 1st tee all existing piping is already sized to 1/4 lb and regulator need to be adjusted down to 9" or 8" w.c. on initial start up. Am I not understanding what you are saying?
                  Anytime I install a higher then a .5 PSI system (mostly single and 2 stage LP systems but would do it with Nat gas as well) I install secondary regulators at every device to protect the individual appliances in the event of a primary regulator failure.

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                  • #10
                    Re: Change to 2lb nat gas system

                    Well I can't load the the drawing I tried it three times.

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                    • #11
                      Re: Change to 2lb nat gas system

                      take a photo of it and post it that way

                      rick.
                      phoebe it is

                      Comment


                      • #12
                        Re: Change to 2lb nat gas system

                        I 'll try that tonight getting ready for a gas heater install in the city. Do any of you need to reline chimneys out there I is up the plumber here to determine I have never seen a bad one do you guys have any pictures ? This city work is a new animal to me all my time has been spent up in the country.

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                        • #13
                          Re: Change to 2lb nat gas system

                          Originally posted by Clipper City Plumber View Post
                          I have a job that the new home owners want to install a gas range and grill on their deck. They only have a 1" main and the range puts them over what the 1" will handle so I have been taking a gas class for the last month since I have been getting so much city work and every thing is gas and old and it has been 6 years since I gone thru a gas class. The guys that teach the class worked for the local gas company since the sixties and told me to call the gas company and see if 2lb is available in the area if so install a 2lb regulator then the 1" main can handle the gas and size two lines for the extra appliances! This really opens the door to adding gas appliances to an older 1/4 lb system.
                          It is easier sometimes to just bring in a new 3/4 or 1/2" line off the meter with Trac Pipe and run it to the new fixtures then converting to 2lb.

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                          • #14
                            Re: Change to 2lb nat gas system

                            we dont work residential but if the pressure is over 1lb we weld it in side a building . how about running gastite
                            Charlie

                            My seek the peek fundraiser page
                            http://observatory.mountwashington.o...nal&fr_id=1040


                            http://www.mountwashington.org/weather/conditions.php

                            new work pictures 12/09
                            http://public.fotki.com/hvachawk/

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                            • #15
                              Re: Change to 2lb nat gas system

                              You mean this stuff?
                              Attached Files

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