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Quick release couplings - smaller ID, should i worry?

post #1 of 24
Thread Starter 
Hi all,

recently i've drained my 7/16 ID 5/8 OD Masterkleer loop and i'd like to install 2x Koolance quick release couplings in the SR-1 560 radiator (external). Up today, i had to cut the tubing and install new one which is not the best thing to do.

Problem is that Koolance's quick release couplings are 1mm smaller in ID (3/8''). When i've built this loop i made sure the flow runs accross 7/16'' diameter (11mm) fittings and tubing.

So, i would like to ask if putting the quick release couplings is something that i'd really should be worried about (flow decrease / temp increase). Imho the pure factor of disconneting the rad in a simple "click" is very attractive and i wouldn't mind a small increase in temperature for the sake of it, but i'd like first to ask the most experienced builders here smile.gif
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post #2 of 24
I wouldn't worry about it. The Koolance QDs have good flow and it is not going to cause a major impact on your temps.
post #3 of 24
Avoid the black Koolance QDs and get the silver ones instead - search the threads and you'll see why.

Also, some good information to be found here:
http://www.xtremerigs.net/2013/07/02/2013-quick-disconnect-roundup/4/
post #4 of 24
If the ID of the fittings are just a little bit snaller, I dont think it's a problem. It just means you will get a more snug, and more leakproof fit.

Edit: never mind, it's the other way around and could be too loose. But the Koolance QDC's appear to be the best around when flow restriction is the concern. So maybe the seal around the OD offers a sufficient seal/grip? I don't know.
Edited by PepeLapiu - 3/4/14 at 9:18pm
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post #5 of 24
Thread Starter 
I'll go for Koolance's QD3, but i'm a bit puzzled about what is needed to get the running...

To sum up, i want 2x QD on my rad. I mean directly on my rad, not in the middle of the tubing going to the rad. So, one side should screw on the G1/4 thread of the rad, the other accepts the tubing. I might also do the same for the graphics card (single card, full EK cover). So:

1) I need to get both of these to get one QD i suppose? Male + female?

2) Does the male or female screw directly on a G1/4?

3) I have 16/11 mm (7/16 ID 5/8 OD) tubing, these come are 16/10 mm (3/8 ID 5/8 OD) so... do i need to change parts of the loop with 16/10 mm tubing or my 16/11 mm Masterkleer will fit ok?

4) Do i need compression fittings on the end where the tubing comes in?
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post #6 of 24
Quote:
Originally Posted by Athanasios View Post

I'll go for Koolance's QD3, but i'm a bit puzzled about what is needed to get the running...

To sum up, i want 2x QD on my rad. I mean directly on my rad, not in the middle of the tubing going to the rad. So, one side should screw on the G1/4 thread of the rad, the other accepts the tubing. I might also do the same for the graphics card (single card, full EK cover). So:

1) I need to get both of these to get one QD i suppose? Male + female?

2) Does the male or female screw directly on a G1/4?

3) I have 16/11 mm (7/16 ID 5/8 OD) tubing, these come are 16/10 mm (3/8 ID 5/8 OD) so... do i need to change parts of the loop with 16/10 mm tubing or my 16/11 mm Masterkleer will fit ok?

4) Do i need compression fittings on the end where the tubing comes in?
1) Yes.
2) You can choose which. They make male G1/4-threaded male QD and they also make male G1/4-threaded female QD.
3) Get the right tubing to match the fittings. It sounds like your tubing has a larger ID which means it will be too loose. Or, you could get one side with a male G1/4 which will screw into your component, and have the other side end in a female G1/4, and then you can put whatever fitting on that you want that fits your existing tubing.
4) They make the QD's with compression ends, or barb ends, so you can choose how you want the tube side to be. But as you noticed, Koolance doesn't make anything with to work with 11mm ID. So if you want to stick with the 16/11 tubing, you would do what I mentioned just above.
Edited by threephi - 3/5/14 at 1:25pm
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post #7 of 24
Just get these ones which come in the G1/4 thread flavor:

Female QD with male G1/4 thread: http://koolance.com/qd3-fsg4-quick-disconnect-no-spill-coupling-female-threaded-g-1-4
Male QD with male G1/4 tread: http://koolance.com/qd3-msg4-quick-disconnect-no-spill-coupling-male-threaded-g-1-4

You can screw one of them directly into your rad, or GPU block. The other one can screw into whatever fittings you are already using for your tubing.

But if all your fiitings come with male thread, you will need a female/female adapter like this to connect your QDC to your tubing fitting: http://www.frozencpu.com/products/14904/ex-tub-1095/Enzotech_G14_Female_to_Female_Adapter_-_Matte_Black_BDF-G14.html

This way, you don't even need to worry about ID an OD matching your tubes.
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post #8 of 24
Looks like we were typing similar answers simultaniously.
But you beat me to it....damn you threephi. biggrin.gif

But for all it's worth, I would guess that the 1mm difference is not an issue and you could fit the Kooance compression to your tubing with no problems.
Edited by PepeLapiu - 3/5/14 at 1:43pm
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post #9 of 24
1) I need to get both of these to get one QD i suppose? Male + female?

Correct

2) Does the male or female screw directly on a G1/4?

See my post with links for that

3) I have 16/11 mm (7/16 ID 5/8 OD) tubing, these come are 16/10 mm (3/8 ID 5/8 OD) so... do i need to change parts of the loop with 16/10 mm tubing or my 16/11 mm Masterkleer will fit ok?


I would guess it would fit with your present tubing. But if that scares you, see my post with links for an alternative way.

4) Do i need compression fittings on the end where the tubing comes in?

I'm not sure I understand this question.
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post #10 of 24
Thread Starter 
cheers guys, i think i'll go the safe way of G1/4 on both ends and a female-to-female adapter, so that i keep my tubing and fittings. The last thing i'd want is the tubing being too big (even for 1mm) and having to place a new order (shipping costs, waiting time etc etc).
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