Compression fittings work by crushing the surface of the tubing, and the surface of the compression insert together to make a gas tight seal.
Stainless is very tenacious stuff, and as a result, when it is drawn through a die when sizing it as tubing, it gets axial ridges formed by galling, and damage to the dies. If you are planning on welding the tubing, the ridges won't matter, but if you are planning on using a compression fitting, the ridges must be eliminated, which is done by more expensive machining processes. You can sometimes use tubing with ridges with compression fittings if the fittings have a highly compliant insert made of plastic, rubber, or copper. Usually, though, when stainless is specified for the tubing, you are going to want an all stainless solution for the fittings too... which means ponying up for the more expensive polished stainless steel tubing. Don't even think of using compression fittings meant for copper, or plastic tubing on stainless. It won't go well if you do. -Chuck Harris [email protected] wrote: > Bob, > > That's the cheapest I have been able to find it. > > I'll probably go that route with the expensive version as it's specified > for compression. > > I know the original setup mixes copper and stainless but I have read that > is not recommended??? > > Cheers, > > Corby > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
