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What is the slimmest compression fitting out there?

post #1 of 9
Thread Starter 
I'm in the middle of building a water cooling loop that contains two 7970s with EK blocks. The problem is that one has the old version of the block, and the other has the new CSQ design. I was going to connect them with little pieces of tubing instead of the EK bridge system because I knew the bridge system definitely wouldn't work with two different cards, but I guess I never though about the possibility of the inlet/outlet ports not lining up between the two cards, and they certainly dont. There is 1 open slot between the cards so there is just a little bit of room, but for it to be even plausible to connect these cards, I think I need the absolute lowest-profile compression fittings I can find. So far it looks like the XSPC low profile compressions are the slimmest: http://www.frozencpu.com/products/12503/ex-tub-788/XSPC_G14_Thread_12_ID_x_34_OD_Low_Profile_Compression_Fitting_-_Black_Chrome.html?id=THttWf26&mv_pc=1994

If anyone knows of any compressions slimmer than these, please let me know. BTW i'm working with 1/2 x 3/4 tubing.
post #2 of 9
How large is the offset between the two ports? Is it like 1mm or 20mm or what?
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by WiSK View Post

How large is the offset between the two ports? Is it like 1mm or 20mm or what?

I don't have a precise measurement but it's probably 7-8mm offset. I flipped the cards around and in the opposite order I have 50mm instead of 30mm between the cards, but after putting the slim fittings on I'd still be left with only 20mm or less to jog over 7-8mm, and that's just way too short of a distance to do an offset that big. It's technically possible, but it would put an uncomfortable and probably damaging amount of stress on the graphics cards.

I've looked at some snake adapters but none fit the exact dimensions I need. It's looking like the only option is to use 90 degree fittings on each block and connect them with a U-shaped piece of tube. Will look ugly and stupid but I'm not buying a new EK CSQ block and throwing away the old perfectly functional block.
post #4 of 9
I don't think the solution is compression fittings. I'll have a think about it. So we have about 50mm to offset 7mm...thinking.gif
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post #5 of 9
Just buy some crystal link tubing and a couple of adaptors, heat it up and bend it slightly. Apparently short bends can be hard so building a simple jig out of whatever is handy to get just the right shape might be worth the effort. Buy the next length up from what you need and trim it back to size after bending.

Other than that people go right around the long way with normal fittings and hose. Fittings coming off of both the top edge of card 1 and bottom edge of card 2.
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post #6 of 9
Quote:
Originally Posted by Jakusonfire View Post

Apparently short bends can be hard ...

This.

He's got 50mm between the cards, that's 2 inches total. As well as the C47 fittings will probably leave only an inch, or inch and a half with C48 fittings. You can't bend crystal link that sharply at all, believe me I've tried.

What might be possible is cutting 45 degree angles to make 90 degree turns. Like I did in this picture, but then twice, one at each end.
CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 75
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post #7 of 9
Thread Starter 
Quote:
Originally Posted by WiSK View Post

I don't think the solution is compression fittings. I'll have a think about it. So we have about 50mm to offset 7mm...thinking.gif

The shortest barb I can find is 14mm. So realistically I'm working with about 20mm to offset 7-8mm, which is starting to look impossible. For the time being I'm just gonna use 90 degree fittings on each block and connect them with a U-shape piece of tubing off to the side, because I don't feel like messing with rigid tubing for the time being. That's a project for some time down the road =)
post #8 of 9
Hang on a second. Isn't the CSQ block only the height of the card, and the older block has the ports sticking out above? So is the offset you are talking about left/right or also up/down? Can you not lay the blocks on top of one another for an exact measurement?
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post #9 of 9
Thread Starter 
Well, okay. I have the link system adapter on the CSQ block that makes the ports face both up and down. On the old block, the centers of the ports are 30mm apart. On the CSQ block with the adapter piece, the centers of the ports are 40mm apart. Left port offsets 5mm to the left, right port offsets 5mm to the right. The ports on the CSQ block also stick out farther from the card, which is where that other 2-3mm comes in. They are diagonal offsets, in reference to the PCBs. There is pretty much exactly 50mm between the downward port on the top card and the upward port on the bottom card. I suppose I could take the cards out and lay one on top the other to get an exact measurement if there is a way to get that exact offset.
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