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Yoshi Moshi

Product that Turns off my PC when Leak

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Posted · Original PosterOP

Can someone please point me to a product that I can put in my computer that will turn off my computer if there's a leak in my water cooling loop? Please and thanks!

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I don't think that exists? How would you even detect that in a good way without a million sensors?

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As far as I'm aware there's no mainstream watercooling product like that. You could create your own with something like a Pi, water sensors, and a relay though.


You'd have to program it yourself.

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They use Moisture kill switches in HVAC systems all the time.  You could probably rig one into your system. 

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I would use a pressure switch.  You can get a bunch of them for around $30.  What you can do is wire it so that when the pressure is low (a leak) it will shut off.  There are various ones you can buy that will have all that set.  You just wire it up on a switch to bypass so you can start the loop.  Once the loop is started, flick the switch and it will shut off when a drop in PSI is detected.  VDO makes a bunch of them.  You will have to test your current PSI to select a sensor that is just below your pressure.  

You would wire it up by selected a closed PSI switch and have the main power come from the sensor to you pump with a bypass of board power to the pump for turning the whole system on.  Then when you are up to PSI, deactivate the power bypass and the pump power will be supplied from the sensor.  Should only need a one pole switch as they both will share the common ground in the power supply. 

I am not sure of the PSI of these loops, but ideally you would want one the same exact as the PSI of your system.  10 PSI switch for a 10 PSI system.  That way it will be the most sensitive to any leaks or changes in pressure.  

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I’d just build a system that wouldn’t leak. Much easier. 

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This is ridiculous, you leak test it before you turn it on. 

If there are no leaks then, then there wont be any leaks later. Use soft tubing and compression fittings and you're good. 


You cant use pressure because the pump will keep the pressure even with a leak.

If you put some kind moisture sensors all over your tubing its going to look ridiculous and cost a fortune.


It would be cheaper to coat your entire motherboard with clear paint to waterproof it than it would be to install some kinda leak system.


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