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Can I change tube size mid way in a loop?

post #1 of 9
Thread Starter 
Im using a G1 sniper board with a built in water channel on the north bridge, but they are 3/8 barbs, and cant be removed. Everything else in the entire loop im about to install is 1/2 using compression fittings. Are there problems that can arise changing the size mid way like that? should i just omit that part and save the hassle. This is my first water build any help would be greatly appreciated( parts dont show up till monday, can barely sleep)
post #2 of 9
Quote:
Originally Posted by ExpertFett View Post

Im using a G1 sniper board with a built in water channel on the north bridge, but they are 3/8 barbs, and cant be removed. Everything else in the entire loop im about to install is 1/2 using compression fittings. Are there problems that can arise changing the size mid way like that? should i just omit that part and save the hassle. This is my first water build any help would be greatly appreciated( parts dont show up till monday, can barely sleep)

Yes, 3/8th barb is for a 10mm inside diameter tubing, 1/2 is for a 13mm inside diameter tubing. So the tubing you should have bought will be too big for the gigabyte barbs. Either use the same id fitting across the system or miss it out, unless there is some type of converter available which am not sure there is. Someone else may have an idea. Is it for Z87? if so there is little to gain anyway in cooling the board other than looks.
Edited by Ghost12 - 12/12/14 at 4:26am
post #3 of 9
Thread Starter 
awesome thats kind of what i was thinking, was trying to apply my car knowledge, in a cars coolant system sizes change but also much hotter, and under more pressure. questions for people smarter than me haha.
post #4 of 9
You'll be fine having a single run with a lower diameter. It'll look weird but I doubt there'll be any temperature changes.
post #5 of 9
Would not make any difference to the temp imo if can fasten it securely without leaking. Bear in mind though tubing on barbs expands over time and must be fastened securely.
post #6 of 9
Alternatively as I said before he can buy a 3/8 barb to do a single run and not risk damaging his system.

And I'm pretty sure it's impossible to secure 1/2 tubing into a 3/8 barb without some o ring voodoo.
post #7 of 9
Thread Starter 
i should give some more info to help. After the gpu loop it goes to a rad, then changes to 3/8 tubing down to NB, then out to cpu, then out of the cpu i would change back to 1/2 tubing, up to another rad, then back to res. all this is the plan, we will see what happens, haha. Im using a HAF 945 so i should have the room
post #8 of 9
Yeah that won't be a problem. From what you said before it sounded like you wanted to use 1/2 with 3/8 barb, haha.
post #9 of 9
Thread Starter 
im off to bed now, but tomorrow ill try to draw up a quick diagram, to show the plan, try to get some input first build like this and its kid of a monster
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