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Tubing too big for compression fittings?

post #1 of 8
Thread Starter 
Hi guys,

Just started to setup my w/c stuff today finally (after having to return about 6 items for various reasons).

I bought 7/16 EK compression fittings and 7/16 Masterkleer tubing.

The Masterkleer box says its OD 5/8 and ID 7/16 which I belive is the correct size for these EK fittings yet I can not get the compression ring over the fitting once the tube is fitted.

Here are some pics:

Tube goes on ok with a bit of force:
450

This is as far as I can get the compression ring over the tube, about 1 turn is all:
450

Another angle:
700

Surely this isn't normal? I'm a pretty strong guy but this is as far as I could possibly get it on. It took me bloody ages to unscrew the damn thing afterwards too!

Cheers guys!
post #2 of 8
u sure you have the right tubing?
post #3 of 8
Looks pretty normal. Of course I can't say how tight the fittings are just by looking at pictures, but if there's one thing I've learned about watercooling it's that you have to make some sacrifices if you WC and one of those is the skin in your hands. tongue.gif

But yeah, it looks normal and imo you should just try using more force if possible.
 
Benching
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Benching
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post #4 of 8
its normal. compression fittings never seat all the way, there will always be a few threatds showing. as long as its snug youll be fine. of course a leak test is the only real way to know
post #5 of 8
are you sure you have 7/16" ID 5/8" OD fittings?
you can get 7/16" ID 1/2" OD fittings.
post #6 of 8
Thread Starter 
Yea just checked the receipt it says:

EK PSC 1/4" Thread Compression Fitting for 7/16" ID - 5/8" OD Tubing : Black
post #7 of 8
^This is why I use barbs and zip-ties
 
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post #8 of 8
That tubing looks like it has a plenty good seal on the barb of the compression. Maybe you have 3/4" OD tubing, can you measure it?

Either way, if you managed to get the compression ring on to at least one thread and it won't go anymore, it's doing its job and as another user said, a leak test will tell you right away if it's on enough.
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CHILZ - Lan Rig
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CANARY - Main Rig
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CADILLAC - HTPC
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