Soft tube twists help!

[mrthanhnguyen]

I have no idea why my soft tube twists too much and restricts the flow. anyone know how to fix? water temp is around 33c-35c and I just replace new tube and it twists again after 30m.

 

[eidairaman1]

Kinking or curling up?

 

[Arctucas]

I have no idea why my soft tube twists too much and restricts the flow. anyone know how to fix? water temp is around 33c-35c and I just replace new tube and it twists again after 30m.

What tubing?

Can you post pics?

 

[mrthanhnguyen]

the tube im holding and another twisted tube are from the gpu to the hard drive and hard drive back to the Mora. The other tube on the right is from the Mora back to the cpu is not twisted at all.

 

[eidairaman1]

Oh youre using flat tubing, yeah the only way to fix that is heat and a flat stone

 

[Arctucas]

Just curious, why flat tubing?

 

[ty_ger]

Flat tubing? That's a thing?
It looks to me like the tubing is getting sucked flat due to too much restriction prior to the point it is being sucked flat.

 

[FoulOnWhite]

Looks like round tubing that's deformed flat to me.

 

[mrthanhnguyen]

its round tube but its deformed. not sure pressure or something causes it but it happens after 30m I change new tube.

 

[lilhasselhoffer]

The only time I've experienced similar is when I torqued the stuffing out of the tube during installation. IE when I twisted the fittings on they were straight, and I torqued the metal connectors they put stress on the tube. Thinner tubes in that situation tend to equalize the stress by collapsing slightly...thicker resists it more but applies that force to the components.

The way to address that is to fit the connectors, then twist the tubing so that however you install the components they come to rest with little or no stress on them. IE, for a 90 degree bend to the left you install the tube with a 90 degree rotation to the right, so when it comes to rest installed there's no stress. If you're running tubing that sees 30+ degrees (Celsius) that heating could weaken the plastic enough so that the pre-stressed state leads to the collapse you've shown us.

 

[ir_cow]

Really cheap tubing will do that to you. Best you can do is hold it straight while tightening. Happens to me when I use hardware store tubing. It's cheap though. Like $10 for 30ft. Fine in a pinch.

Your using the same quick disconnects as me. I know it can be hard to get it going for the compression. Might be slightly too thick.

 

[Athlonite]

Looks like the tubing wall is to thin to cope with the heat of the water passing through it buy some thicker walled tubing

 

[de.das.dude]

looks to me like it is being sucked flat. Others have mentioned the same. Try a tube with a thicker diameter.

Or use one of those spring things they put inside arteries in hearts to prevent blockage. Stent its called i think. My dad had one put in.

 

[Outback Bronze]

tubing wall is to thin

Try a tube with a thicker diameter.

Yep, this would be my suggestion. Tubing can't cope.

Have you tried thicker wall tubing?

Otherwise, you could do hardline where the soft tubing keeps failing.

 

[ir_cow]

I should have said if your freely letting the tube twist while your getting the compression on - you are doing it wrong. Cheap soft tubes with no ridged walls doesn't help either though.

 

[Vya Domus]

Use thicker tubes and buy 45/90 degree fittings to reduce the curvature in your bends. There is no other way to fix this.

What I suspect happens is that once the loop heats up the tubing becomes more soft and malleable and starts deforming/twisting where there are tight bends, that's why it happens after some time, again, no real fix other than getting thick tubes. I use 16/10mm, no twisting/kinking.

 

[sneekypeet]

Try pre twisting the tube against the threads of the fitting. When you tighten, it will be in a better position. Can't say I've ever had tubes suck shut tho, and I've used some cheap shit over the years. You could try a coil around that section if you don't want to replace the tube.