[LazyPup]

You will need a male iron pipe x flare fitting to connect the copper. Make sure it is a brass or bronze flare adapter that is rated for gas service to make the transition from iron to copper.

Also, do not use the thin white teflon tape that is commonly sold in hardware stores. Pipe dope would be the preferred method on the black iron pipe fittings and may also be used to connect the flare adapter to the iron pipe.

If you do happen to use PTFE (teflon) tape be sure to get the "Yellow Gas Tape" and be sure to wrap at least three layers tightly in the direction of the threads.

You can find rolls of copper tubing that is labelled as approved for gas in the plumbing department of most home supply stores.

Just make sure all tubing and fittings are labelled as approved for gas.

Do not apply dope or teflon tape to flare fittings. They are finely machined fittings and dope or tape will interfere with the seal.

Make sure to test all joints with a 50/50 mix of water and liquid dishwashing soap. If you see any bubbles forming the joint is not sealed correctly. (Childrens play bubble soap makes an excellant test solution for gas lines.)