2" copper ID 2.045?

[jody]

I ordered some 2" ferrules, and they seem to be fine, they have an OD of 2.000.

Unfortunately, the copper I have has an OD of 2.122, and an ID of 2.045?? I was hoping to use the freeze/heat method of attaching them together, but I guess I'm outa luck on that one.

Is this normal? Everything I've read so far said that 2" copper usually has an ID of 2 or a bit bigger.

I'm going to put an add out on kijiji to weld? these together. Anything I should mention to make sure I get the point across? Just something like "copper to stainless" I'm guessing?

Thanks,
Jody.

[myles]

Copper tube is measured on the outer diameter and for 2" is actually 2.125"
FYI this might be usefull http://www.copper.org/applications/plum ... table.html

I am assuming your 2" ferrule has a PIPE diameter of 2" and the flange itself is about 64mm diameter?

There is an easier answer than welding. Buy yourself some straight 2" copper slip couplers. I would go for the end / capillary feed types. These join your copper pipe together by sliding onto the OUTSIDE of the tube.

Slide the pipe part of your 2" ferrule into one end of the coupler and solder it on. You will need silver solder and the special flux for stainless steel. It is easier to do this bit first because you can heat the copper coupling to get an even heat distribution. WITH THE RIGHT FLUX, that is important or the solder will not flow on the stainless. The hard (I like the 56% silver) silver solder works great on the stainless, but you have to watch the temperature, as it is much hotter than for the soft solder and it is not difficult to go a bit too far and over heat your stainless. That is why I recomend heating the copper. I try not to heat stainless directly unless I absolutely have to.

Then slide your copper tube into the other end of the coupling and solder that also. Either silver solder or hard solder which ever you prefer.

[goinbroke2]

Pipe is measured outside dia and tube is measured inside dia. Learned that quick when I bought a pipe bender to build rollbars out of tubing!
The $199.00 pipe bender wasn't such a deal.

(course it was cheaper than the $1700.00 tube bender I bought)!

[jody]

There is an easier answer than welding. Buy yourself some straight 2" copper slip couplers. I would go for the end / capillary feed types. These join your copper pipe together by sliding onto the OUTSIDE of the tube.

Slide the pipe part of your 2" ferrule into one end of the coupler and solder it on. You will need silver solder and the special flux for stainless steel. It is easier to do this bit first because you can heat the copper coupling to get an even heat distribution. WITH THE RIGHT FLUX, that is important or the solder will not flow on the stainless. The hard (I like the 56% silver) silver solder works great on the stainless, but you have to watch the temperature, as it is much hotter than for the soft solder and it is not difficult to go a bit too far and over heat your stainless. That is why I recomend heating the copper. I try not to heat stainless directly unless I absolutely have to.

Then slide your copper tube into the other end of the coupling and solder that also. Either silver solder or hard solder which ever you prefer.

hmm, I actually do have a couple of couplers already... they have an even bigger ID though, so they will sit about half way down the flange. I'm guessing this won't be too strong and might cause the tri-clamp to not tighten down all the way...I'll do some fitting when I get home to see if it will be a problem.

Thanks for the response though.
Jody.

[myles]

I ordered some 2" ferrules, and they seem to be fine, they have an OD of 2.000.

Unfortunately, the copper I have has an OD of 2.122, and an ID of 2.045?? I was hoping to use the freeze/heat method of attaching them together, but I guess I'm outa luck on that one.

Is this normal? Everything I've read so far said that 2" copper usually has an ID of 2 or a bit bigger.

I'm going to put an add out on kijiji to weld? these together. Anything I should mention to make sure I get the point across? Just something like "copper to stainless" I'm guessing?

Thanks,
Jody.

Jody, if I am reading this right, the pipe part of your flange has an outer diameter of 2.000, your copper tube has an inner diameter of 2.045 just slide the flange into the copper tube and solder it up. You should have about a 0,5mm gap all round your flange pipe, inside the copper tube. That may be a bit loose for solder, so just pack it out by wrapping some thin copper ( strip it out of multicore mains cable)around it first. I should have spotted that earlier. sorry. You could even pre-solder your stainless first that will help a bit.
Myles.