Propane Lines

[riskstl]

I am replacing the old with new copper lines for the propane on a '72 Ambassador. Is there a substitute for copper? I will stub up with new copper to each appliance but would like to replace the main line with the white tubing I'm seeing on the newer AS. Manuals for the new AS indicate E-Pex but I'm finding little info on the product.
Thanks in advance.

[A W Warn]

Originally Posted by riskstl

I am replacing the old with new copper lines for the propane on a '72 Ambassador. Is there a substitute for copper? I will stub up with new copper to each appliance but would like to replace the main line with the white tubing I'm seeing on the newer AS. Manuals for the new AS indicate E-Pex but I'm finding little info on the product.
Thanks in advance.

PEX is for water lines. If it is being used in newer trailers for propane, that a new one on me!
I have seen yellow plastic pipe being used for natural gas, but I do not know what material it is (PVC? PEX? ABS?)

On my trailer PEX is slid over the copper propane lines as a protector.

You can use a combination of copper and black iron pipe for propane, but personally I would not do that due to corrosive action between different metals. You would have to buy special fittings for the transitions.

[RandyNH]

I do believe you may be looking for Gas Flex

[68 TWind]

I've got the original copper lines on my Trade Wind and they have been working fine for 49 years. Copper is easy to work with. Sometimes newer isn't always better.

[AlinCal]

I would use copper. The material other than black iron or galv. Pipe used in home construction is Trac Pipe and would not be a good choice for an rv, besides being expensive it does not come in sizes under 1/2".
FYI. Trac pipe is a flexible corrugated stainless steel tubing with a plastic outer shield in either yellow or black.