Hi guys, i am from germany.
I don't posted here up to now i think. But read that page for a looong time :-) . I have to say that it is also for convenience. These plug and play systems from Festo are easy to maintain and safe. I build my waterblock myself and also gfx and northbridge block. I use silicon tube with 10 mm inner diameter. Don't know what's that in inch. But it was really complicated to get these with an metric thread. I use hose clamps and had "some" accidents with an flooded PC.
Luckily nothing was damage (up to now). With these Festo connectors, there isn't that high of an chance for waterdroplets in PC.
Don't know how good my english is, but i also made an article that might be interessting for some ;-)
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*with some nice PICS me thinks* <-----
Also did i use an spacer up to now in all mywc'ed PC's (2) - and i didn't broke an CPU ever because of mounting my waterblock.
MfG QT