bp8401363 :
my biggest problem of not buying a water coooler is its leakage problems.
I want to know why this leaks happens and how to prevent?
please
This is in relation to a custom built traditional water cooling loop.
Leakage today is not a cooling hardware problem, because all the water cooling components are leak tested before they ever leave the factory, leaking is an installer problem!
Most causes are simply not tightening the seal of the O-Ring fittings some only finger tighten them but that is not enough to withstand normal expansion and contraction and counter clockwise tubing pressure.
What is needed is tighten the fitting as much as possible with your fingers then wrench tighten an additional 1/4 ~ 1/2 turn, but no more than 1/2 turn, you do not want to strip the G1/4 threads.
Tubing routing can sometimes put either counterclockwise (untightening) or clockwise (tightening) pressure on the fitting, make sure if that happens you control that by a slight twist of the tubing and only allow clockwise pressure against the fitting.
Then expansion and contraction won't matter because the tubing will always be applying slight tightening pressure to the fitting.
Other leak possibilities come from not tightening hose clamps enough when using flex tubing over barbed fittings, you do not want to Gorilla the clamp as you can strip out it's thread or cause it to cut into the tubing, but it has to be snug enough not to leak.
And the compression style fittings can be affected by expansion and contraction as well and occasionally a finger tightening check is a good maintenance habit, and regarding compression fittings for flexible tubing, they only work with certain types of tubing they will not work with plasticizer-free tubing, so only use barbed fittings for plasticizer-free tubing.
Before you put the system into the actual operation of cooling the computer you will leak test the entire loop for hours, with the pump powered individually with your power supply, this is to discover and fix any leaks in the loop before you actually energize the system and put the computer into operation.
So even if you have a leak from the installation the leak test will reveal where it is, and you will fix it, and once the loop is tested leak free and your installation errors are all resolved, then the system goes into operation leak free, and the possibilities of a leak ever developing after the leak testing are very, very, very, rare.
The leaking mumbo jumbo is just fear of the unknown, with today's water cooling hardware it is really a thing of the past.