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Old 09-30-2011, 07:19 PM   #1
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Proper flare for gas tubing


I need to replace the 3-wire pilot assembly on my older Carrier furnace. I picked up a new one and in the paperwork, it says to use the new fitting that comes with it. I am assuming that I should not use the old fitting on the gas tube. So, what is the proper type of flare to use? Should I do a double flare, like one would use for brake lines, or something else? Thanks

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Old 09-30-2011, 07:27 PM   #2
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Proper flare for gas tubing


new tubing into the gas valve for the pilot gas is a brass ferrell a one time shot...slip it on and tighten it into the pilot port it should snap the lock down compression ring onto the tubing so when you remove it again its the ferrell compression ring and the lock down that screws into the valve

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Old 10-01-2011, 06:17 AM   #3
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Proper flare for gas tubing


Thanks for getting back to me. I see what you are talking about, now that I got the old pilot out.
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Old 10-01-2011, 12:01 PM   #4
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Proper flare for gas tubing


its not so much the gas pressure but a leak will cause a situation that they use compression brass and as you see the ferrell is on for life and sets itself when you tighten it in.the gas piping is typical threaded with sealer in and out within the furnace and the supply..i don't think anybody makes flares the same
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