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A question about Koolance Quick Disconnect Fittings QDC3

post #1 of 7
Thread Starter 
Hello all,

Im upgrading and expanding my loop again next month, and i was concidering using QDC3 quick disconnects on some essential hardware like my GPU block and radiators.

I have a small form factor case so i dont have room for long stretches of tubing, so i would like to directly connect the QDC fittings to my GPU for example, so i can simply remove it for maintenance etc. However, the different types of male / female / threaded fittings have got me confused as to what goes where.

Can somebody please tell me exactly what type of fittings i would need to buy and how i need to connect them into the loop, if i want to just remove my GPU block? I assume the same would go for a radiator?

Like for example :

======= tubing |:: insert fitting:::::insert fitting* :::::waterblock inlet ::::: waterblock outlet :::: insert fitting*::::insert fitting::: |tubing=====================================

*Prefferably directly connected to the waterblock.

My tubing is 10/13mm.
My EK waterblock is G1/4, same goes for all the other components.

Thanks in advance !
Edited by corrosion666 - 9/29/15 at 4:56am
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post #2 of 7
Hi there,

You would use male compression 13/10 - female threaded and later on female threaded - male compression 13/10

A word of warning though.. I have made very bad experiences with Koolance QDCs as after a little while the QDCs where not shutting off the flow anymore.. Had a few pairs (4) in my system two years ago or so and left it running for half a year with Mayhems pastel coolant and when I did maintenance all females but one were stuck in the open position..

Ah, I forgot the best one.. Had one as bleed port (female threaded) connected to the lowest part of my system and used it only once and it broke when I bled my system.. Discovered it when I refilled it after I got rid of all the other QDCs...

Koolance stuff isn't worth its money in my opinion.. Everything I ever had from Koolance broke in a very short time..

-D
Edited by DtheM - 9/29/15 at 5:32am
post #3 of 7
Thread Starter 
Quote:
Originally Posted by DtheM View Post

Hi there,

You would use male compression 13/10 - female threaded and later on female threaded - male compression 13/10

A word of warning though.. I have made very bad experiences with Koolance QDCs as after a little while the QDCs where not shutting off the flow anymore.. Had a few pairs (4) in my system two years ago or so and left it running for half a year with Mayhems pastel coolant and when I did maintenance all females but one were stuck in the open position..

Ah, I forgot the best one.. Had one as bleed port (female threaded) connected to the lowest part of my system and used it only once and it broke when I bled my system.. Discovered it when I refilled it after I got rid of all the other QDCs...

Koolance stuff isn't worth its money in my opinion.. Everything I ever had from Koolance broke in a very short time..

-D

Wow thats too bad, especially considering how much money a single QDC costs. Well i guess i could buy fittings just for the GPU and take the risk. I am looking to upgrade it in about 2 months time and i dont want to take out my entire loop again in a month or 2. Lets just hope they will last that long at least. After the GPU upgrade i will probably keep the loop running for a longer period of time without maintenance. If they are broken by the next time i do maintenance i will just discard them, since i dont plan to upgrade any other hardware beyond the GPU.

Are there any other quick disconnect fittings out there? Or should i try implementing a valve instead? Remember the most important thing is that i can easely remove the GPU from the loop without making a mess.

Thanks !
Edited by corrosion666 - 9/29/15 at 5:44am
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post #4 of 7
If you open the QDCs with liquid in make sure to have something to catch any spill and be prepared to close them again really fast wink.gif

The quality of Koolance stuff is severly lacking.. Also had adjustable length fittings that kind of dissolved themselves after a little while.. Used Bitspower after that and never had any issues anymore wink.gif
post #5 of 7
First off, those are no-leak fittings, ie. they close off when disconnected. You don't need that functionality if you're going to be draining the system first. Besides they are more restrictive than regular QDCs.

That being said. get fittings that match the threads in your components (ie. G1/4 BCPP or 1/4 NPT).

Get threaded (G1/4 BCPP or 1/4 NP) male or female fittings to attach to your components. One male and one female for each connection. It doesn't matter if the male or female attaches to the component.
Then get adaptors matching that thread to attach tubing to the QDCs.



There are also angle adapters available that may make the tubing runs easier.
 
 
Edited by billbartuska - 9/29/15 at 6:24am
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by billbartuska View Post

First off, those are no-leak fittings, ie. they close off when disconnected. You don't need that functionality if you're going to be draining the system first. Besides they are more restrictive than regular QDCs.

That being said. get fittings that match the threads in your components (ie. G1/4 BCPP or 1/4 NPT).

Get threaded (G1/4 BCPP or 1/4 NP) male or female fittings to attach to your components. One male and one female for each connection. It doesn't matter if the male or female attaches to the component.
Then get adaptors matching that thread to attach tubing to the QDCs.



There are also angle adapters available that may make the tubing runs easier.
 
 

The adaptor part is still not 100% clear to me. It can be any regular / compression fitting that matches the thread (in my case G1/4 BSPP) on the female or male QDC fitting right? Im especially interested in those 90 degree adaptors listed in your link as i need some tight angles. Thise will screw right onto the QDC and i can connect the tubing on the other side right?

I just want to make sure i am getting the right parts. English is not my mother language and watercooling parts and fittings have completely different names here.
Edited by corrosion666 - 9/29/15 at 7:32am
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post #7 of 7
Quote:
Originally Posted by corrosion666 View Post

The adaptor part is still not 100% clear to me. It can be any regular / compression fitting that matches the thread (in my case G1/4 BSPP) on the female or male QDC fitting right? Im especially interested in those 90 degree adaptors listed in your link as i need some tight angles. Thise will screw right onto the QDC and i can connect the tubing on the other side right?

I just want to make sure i am getting the right parts. English is not my mother language and watercooling parts and fittings have completely different names here.
Yes, those angle fittings appear to be threaded on both ends.

Here's a picture of a 3D drawing of one of those swivel fittings. Note the inner restriction of only 10mm.

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