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Pipe bending 101 - Page 111

post #1101 of 2160
Quote:
Originally Posted by Simplynicko View Post

general question. does copper tubing or hard acrylic tubing have a higher chance of leaking?

Not a chance. If done right same as tubing.

The push fittings I used at least are very solid witha good sized o ring in them. Only way they can leak is if o ring is broken or not pushed in all the way. Again if done right I beieve they are exactly the same as tubing for reliabilty.
post #1102 of 2160
One odd thing I've experienced is that the threads on one of my push fittings leaks a couple drops when my build is turned off, and will do the same if the fitting is switched out. It's not a major leak, and it stops a second after it starts.
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post #1103 of 2160
Quote:
Originally Posted by Simplynicko View Post

general question. does copper tubing or hard acrylic tubing have a higher chance of leaking?
I can't think of a reason that would make them more likely to leak over soft tubing.
I use the push-fit fittings for air at work and they tolerate 200 psi without any problems. It's everything else in my air system that can't handle 200 psi. But the push-fits hold up to that just fine. You are not likely to get 10-20 psi of water in your loop, much less 200 psi.
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post #1104 of 2160
Quote:
Originally Posted by PepeLapiu View Post

You are not likely to get 10-20 psi of water in your loop, much less 200 psi.

Possibly that's why it leaks. High pressure might help "squeeze" the pipes against the o-rings and, in push-fittings, the harder the tubing is forced out of it, the harder the clamps bite into the tubing, securing it in place. Maybe the low pressure allows the tubing to be a bit loose against the o-rings. Just a theory, I wish someone would test it out.

It might not be a major leak, but it may cause problems in the future. A single droplet may be the cause of a dead mobo or GPU.
post #1105 of 2160
Do you have a pressure value installed? I ran into a simiular problem once. when the system was shut down the pressure would increase, and liquid would find its way out out of the fitting joints, not allot them but the weakest ones. I'm no Genius on the subject, but summed it up to the tubing not being able to expand, being in a closed loop. Once I added a pressure value fitting, the issue never happened again.
post #1106 of 2160
I have no experience with PC Watercooling but I am a Mechanical Fitter and worked for the local water corp for 5 years and now i work offshore with Oil & Gas. So I have extensive experience with tube bending/fitting, high pressure systems with pumps that have impellers the size of your living room.

Also please note I have not read anything on PC cooling nor have I read the thread fully.
This is just me putting my quick 2 cents in. If you think I might be helpful feel free to ask me some questions.

I myself can not trust the clear tubing that people use for PC Cooling! I could only imagine that it would become brittle, kink, not seal. Also probably made in china (dont get me wrong some good things come out of their of a high standard.). However we (work mates) often joke about the quality of the materials that get sold at the big hardware chains. They are oversize and undersize and can be a pest to get them to seal.
I would be inclined to go industrial with Swagelok but its hard to undo in tight spaces.With screw fittings make sure you screw the fittings on carefully because they cross thread (very fine threaded). You only need to nip them up to. No over tightening needed.
I also think that using high pressure poly for your lines would be good and the snap/push fittings work well sealing but sometimes the can be difficult to remove lines.
If you dont care about the look i would go industrial fittings from a local supplier.

http://www.swagelok.com/?gclid=CIz49aa2yrcCFeJMpgodjzUAUA

Ive thought about water cooling on my rig but at the moment i dont need it. Maybe near Xmas when the 8970's have been out for a bit i might get 4 of them and if i do I will go with what i know works! I dont know if i could risk a 5k system to some cheap bits and pieces from ebay via china.

Cheers
post #1107 of 2160
Quote:
Originally Posted by Simplynicko View Post

general question. does copper tubing or hard acrylic tubing have a higher chance of leaking?

I had a leak when doing the initial fit with aquatuning fittings. I hadn't pushed the pipe in the grabring fully.

Just make sure you push them in fully! I'd imagine the compression fittings have no chance of leaking if fitted properly?

All I can say is I've seen a big improvement using copper pipe over tubing?

I'd say the positives are

Stiff tubing lets you do clean runs. No kinking

Lower temps with copper. Prob no difference with acrylic?

& I'd say cons are

Not easy to drain? I should of added a drain valve?

Not as easy to assemble or disassemble?

Other than that I'd say go for it, the aquatuning fittings are really cheap aswell!

If you want to change the colour of the pipes. Just paint them lol? Clear pvc stains?
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post #1108 of 2160
Quote:
Originally Posted by Simplynicko

general question. does copper tubing or hard acrylic tubing have a higher chance of leaking?

It depends on the situation.

Copper is good if you want to fit plumb lines and leave them alone DONT DISTURB THEM. It also depends on what fittings your using as well that can change the experience.
With copper the more you disturb them the more chance they could leak. Its like anything i guess howerver if you do not disturb them you will be right as rain for years and years. Tubing on the other hand only continues to degrade as soon as you install them. Tubing is great for quick release and draining. But choose your tubing wisely! But they can all kink, split and not seal if they are poor quality. Being not installed correctly is the biggest issue I find. People think they have rammed them home for them to come flying out again when under pressure.
post #1109 of 2160
Quote:
Originally Posted by hatlesschimp View Post

I have no experience with PC Watercooling but I am a Mechanical Fitter and worked for the local water corp for 5 years and now i work offshore with Oil & Gas. So I have extensive experience with tube bending/fitting, high pressure systems with pumps that have impellers the size of your living room.

Also please note I have not read anything on PC cooling nor have I read the thread fully.
This is just me putting my quick 2 cents in. If you think I might be helpful feel free to ask me some questions.

I myself can not trust the clear tubing that people use for PC Cooling! I could only imagine that it would become brittle, kink, not seal. Also probably made in china (dont get me wrong some good things come out of their of a high standard.). However we (work mates) often joke about the quality of the materials that get sold at the big hardware chains. They are oversize and undersize and can be a pest to get them to seal.
I would be inclined to go industrial with Swagelok but its hard to undo in tight spaces.With screw fittings make sure you screw the fittings on carefully because they cross thread (very fine threaded). You only need to nip them up to. No over tightening needed.
I also think that using high pressure poly for your lines would be good and the snap/push fittings work well sealing but sometimes the can be difficult to remove lines.
If you dont care about the look i would go industrial fittings from a local supplier.

http://www.swagelok.com/?gclid=CIz49aa2yrcCFeJMpgodjzUAUA

Ive thought about water cooling on my rig but at the moment i dont need it. Maybe near Xmas when the 8970's have been out for a bit i might get 4 of them and if i do I will go with what i know works! I dont know if i could risk a 5k system to some cheap bits and pieces from ebay via china.

Cheers

I think I remember looking at swagelok's but I think I had trouble finding the British tapered threads type.
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post #1110 of 2160
Well we got plenty of them here. Maybe I could help you get them?
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