"John Stumbles" wrote in message
...
On Tue, 08 Apr 2008 13:23:06 +0100, Doctor Drivel wrote:

The "bendable" corrugated copper flexes can be used on gas.

They *can* (ad can garden hose) but they *may* not unless the fitting is
approved for use with gas. I've never checked whether they are
or not: I've never been inclined to use them.

They have copper tails and any solder or compression fitting can be used.
They are not cheap. Only used to get out of a scrape.