Exterior use of flexible gas line

Originally Posted By: kmcmahon
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Need to know if the yellow flex gas line is rated for exterior use.


![](upload://ncUeonGpIryee1mW579OVQiAQzz.jpeg)


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Originally Posted By: bkelly2
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Is that flex line coming right off the meter?


Originally Posted By: kmcmahon
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Yep…it was an add-on feeding the converted fireplace. Just doesn’t appear right to me.



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Originally Posted By: jpope
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National codes defer to manufacturers recommendations and/or local AHJ, but this is typically okay for CSST. Appliance connectors (not the same as CSST) require “protection from damage” if passed through a wall.



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Originally Posted By: kelliott
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Here’s a couple links to mfg’s. But your pic isn’t exactly what they’re showing.


http://www.dormont.com/dmc/res/GasConnectors.aspx?seqid=3
http://www.keithspecialty.com/gas.line.htm
Second link says: yellow PE [plastic] gas line, manufacturer: Oil Creek Plastics
Plastic gas line is used for outside underground service line to your house or building


Originally Posted By: bkelly2
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Check with the local Inspector, but I would call it out as not being protected from physical damage from the limited view picture.


Originally Posted By: dandersen
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This is not the flex pipe you see at indoor appliances (under stoves). It is designed for just this use. We have an education/ certification requirement to use/buy this type of piping in TN.


It's like flex duct. It has it's uses, but I don't like to see it run all over the place.

In this case, it gives you a way to retrofit the fireplace through the wall without fittings.

I would call it out if it is not protected from a lawnmower ect...
I have seen damage leaks from this application too close to the ground.