question about 12.7/7.6 fittings with 11/8 system

[BobbyBoyGaming]

Hello,

I have a system that uses 11/8 fittings (5/16 inch ID), however, ever since you stopped shipping to America I can no longer find these fittings in the USA market.
I cannot find these in the USA at the moment:


The closest I can find is this:

Has anybody tested these barbed ES 12.7/7.6 fittings with 11/8 EPDM tubing and tight hose clamps like these ones?



For use with this tube:

 

[BobbyBoyGaming]

Is there an Alphacool store staff member that could very quickly test this combination of fitting and tube (and clamp if you have it) to see if it is water-tight?

 

[Eddy]

That’s not going to work. You might be able to get the tube on, and it may seem like it fits somehow, but in the end, it’s not a combination that can be recommended. The 0.4 mm difference might not sound like much, but it’s very misleading — it makes a huge difference when it comes to sealing, especially once the pressure increases.
Have you checked ModMyMods, Titan Rig, or Performance PCs? Those are our direct partners.

 

[BobbyBoyGaming]

Yeah I checked them. They don't sell the 11/8 fittings only the tube and some plastic quick connectors. Luckily I did find some 11/8 (OD/ID) fittings made by BitsPower though.

 

[Eddy]

Glad to hear you found what you were looking for. However, 11/8 mm is a tubing size that will likely become obsolete in the water cooling market soon. You should keep that in mind if you ever plan to upgrade or build a new setup in the future.
Have fun with your build!

 

[BobbyBoyGaming]

Which size fittings do you think will take the place of 11/8 for Small Form Factor applications?
Will 10/8 also be obsolete soon as well?
I have a system that uses 13/10 but those fittings are too big for some SFF applications.
11/8 seemed good to me because it does not restrict the flow too much, but it also doesn't have a very large OD.

12.7/7.6 seems unnecessarily bulky. The OD seems too large.
And 8/6 seems like would restrict the flow too much.

 

[Eddy]

For tubing, the most common size by far is 13/10 mm, followed by 16/10 mm. All other formats are niche options, usually used only for specific applications. Smaller sizes have become almost irrelevant. We only keep them in our range for a few very specialized customers.
12.7/7.6 mm is only used in our server segment.

The inner diameter of a fitting is 8 mm at the thread. It can’t be made larger because the G1/4" thread defines the outer dimension. If you’re using tubing with a smaller inner diameter, it’s hardly a disadvantage. Restrictive points are always curves, bends, or any place where the water can’t flow straight.