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Copper tubing.

post #1 of 14
Thread Starter 
Because of all the bends, right angles and angles in general, in my build...I'm debating doing copper pipe/tubing.

I've found a mfctr. that custom makes 3/8id 1/2od and while the tolerance is a little on the small side, I can always heat it up enough to compensate for the new width. ~ It's very "soft" from what I'm told.

My question is, if I'm using standard 3/8x1/2 compression fittings, will this cause a leak?

In my experience with Tygon/normal tubing, it does not but, I'm afraid it may if I go with the copper tubing.

Anyone have any comments/insight into this?

Thanks.
post #2 of 14
the plastic flex tubing uses a different "compression" method.
moving to the metal compression fittings with the crush sleeve is
what you are after. koolance, bitspower and other still have metal
comprssion fittings. just gotta get square clean cuts on the tubing.
and make sure the cuts are round and deburred.

airdeano
post #3 of 14
Thread Starter 
Any idea of where I can find them?

Can't seem to locate them on any of the major vendors.

Thanks much!
post #4 of 14
Bob here on the forums won the MOTM for Juin. MKG is the name of the build. He has made his own custom copper tubing.

Build Log linky.


Don't be afraid to send him a PM to ask him some questions. I'm sure he'll be happy to answer them and help you with what you're seeking to do.

GL

-Rog
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post #5 of 14
Quote:
Originally Posted by Masked View Post

Any idea of where I can find them?
Can't seem to locate them on any of the major vendors.
Thanks much!


heres koolance's offerings: link

and PCP for 3/8"

airdeano
Edited by airdeano - 8/31/12 at 8:49am
post #6 of 14
Quote:
Originally Posted by airdeano View Post

heres koolance's offerings: link
and PCP for 3/8"
airdeano

Note that those are for 3/8"OD

You need the ones for 1/2" OD

For those type of fittings they don't really care about the ID of the tubing, the seal is formed around the OD and there is nothing contacting the tubing ID.

Also worth noting is that the olive (or ferrule) is a one time only use - it deforms to seal onto the OD of the pipe. You can remove the pipe from the fitting and then replace it in the same (or another similar) fitting, but once the olive is on the pipe it stays there (in theory!).

It is worth buying a bunch of spare ferrules in case you want to re-do a tube.
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post #7 of 14
Thread Starter 
Everyone I've spoken to, is actually using these:

http://www.sidewindercomputers.com/big1sishmuad1.html

I have no issues with using those fittings, not a single one, actually...I'm just afraid they're going to leak.

I understand the average system is on 2ppsi so, there's no risk of the pipe popping out but, there are others that have taken the stock compression fittings and made them work as well.

I understand why the stock compression fittings are bad but, in 100% honesty, the Koolance fittings look terrible.

Ideally, the link adapters make sense, I just don't want the pipe to fall out.
post #8 of 14
There is nothing like that for 1/2 piping as far as I know.... also, how "soft" of pipe are you getting? You really don't want to be using annealed copper for this.
 
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post #9 of 14
Quote:
Originally Posted by Masked View Post

Everyone I've spoken to, is actually using these:
http://www.sidewindercomputers.com/big1sishmuad1.html
I have no issues with using those fittings, not a single one, actually...I'm just afraid they're going to leak.
I understand the average system is on 2ppsi so, there's no risk of the pipe popping out but, there are others that have taken the stock compression fittings and made them work as well.
I understand why the stock compression fittings are bad but, in 100% honesty, the Koolance fittings look terrible.
Ideally, the link adapters make sense, I just don't want the pipe to fall out.

you can't really do 180 degree turns with them, which is why you always see rotary 90s when they use crystal link fittings, and they are meant for 12mm acrylic tube which are smaller and usually a lot smoother than 1/2" copper, if you are worried you could always buy 2 crystal link fittings, and a small piece of copper pipe and try to see how much force you need to slip them on and off, though i wouldn't recommend doing it a ton since you might nick the double o-rings in the fitting and make it unusable till you replace the o-rings, which i'm not sure if they take the standard g 1/4 fitting o-rings
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post #10 of 14
Don't forget (was the most obvious choice to my mind), a hardware store. Copper is used in a lot of plumbing, sinks, water heaters, etc.
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