!HELP! Trying to extend old outdoor gas line-

[Drharney]

Hello - I have a 90lb outdoor propane tank that I'm trying to move aprox. 10 feet from where it is now - which means that I need to extend the line.

I purchased a flex line here: https://www.amazon.com/dp/B09XMBQXKL?psc=1&ref=ppx_yo2ov_dt_b_product_details
All the connections are seemingly impossible to turn, and the copper piping becomes twisted as I start to crank.

First image is where the copper pipe splits to feed the two appliances inside,
second image is where the copper pipe meets the tank.

I turned the gas off, and let it clear the lines.
Any suggestions on the best way to approach this?

 

[breplum]

Those are flare fittings. It takes two, adequately sized adjustable crescent wrenches or equal, exact size wrenches.
If you are so inexperienced as to not know basics like that, beware: Gas is extremely dangerous. You need a professional.