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Pressure valve?

post #1 of 8
Thread Starter 
Hey guys, so im having a problem with my rig where on load ... it tends to leak around the res. I believe theres a pressure build up so i was thinking of getting some sort of pressure valve.

So far ive found 3; a koolance pressure valve, Phobya pressure valve and a Aquacomputer pressure equalization membrane.

I couldn't find to much about these, and was wondering if any of them was recommended over another.

Thanks for the help! biggrin.gif
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post #2 of 8
First things first. Where exactly is it leaking? Have you checked the O-rings and the barb/compression fitting as well as the tube it self.

Also having more air in the res reduces pressure build up as air is much more easily compressed then water. To actually need a pressure valve the loop would need to be huge.
    
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post #3 of 8
Thread Starter 
gah, well the res is 68ml redface.gif , ive had some leaks where the fittings screw into the res (before ive had a few where the gpu fittings are, but made some changes to fix that). Ive tried using Teflon tape to create a tighter seal but it seems to squeeze through on load frown.gif .

But fortunately where the only two compression fittings dont leak biggrin.gif ive tried using different levels of fluid in the res and seems the lowest i can go so far is 3/4 full not to have air get into the pump.
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post #4 of 8
If your fittings use O-rings then teflon tape should not be necessary for a air tight seal. Perhaps the res it self it damaged.
    
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post #5 of 8
Thread Starter 
Well the teflon tape is mostly for the fittings since there are around ..15 or so 90 degree fittings redface.gif, but i tried leaving the fill port open when stress testing and didnt notice any leaks, which is what made me think that a pressure fitting could help.

Edit: Bleh, if i some how manage to increase the air pocket size could that help? frown.gif

Edited by DNytAftr - 2/6/13 at 12:54am
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post #6 of 8
Quote:
Originally Posted by DNytAftr View Post

Well the teflon tape is mostly for the fittings since there are around ..15 or so 90 degree fittings redface.gif, but i tried leaving the fill port open when stress testing and didnt notice any leaks, which is what made me think that a pressure fitting could help.

Edit: Bleh, if i some how manage to increase the air pocket size could that help? frown.gif

If its a pressure issue then it should. Perhaps fit a fill tube with a plug to the res.
    
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post #7 of 8
If you have leaks its a bigger and more basic problem than pressure. Fittings with O rings should not leak at all ... indeed that is one of the reasons there are pressure valves at all. Fittings are generally so good that pressure can in some extreme situations build up to very high levels and components will fail and burst before fittings leak. If leaking was common and caused by pressure then the leaking would reduce the pressure itself.

The other reason for them , and in particular the Aquacomputer pressure valves is that AC make very sensitive flow and Water level sensors that use water pressure to give their results. They need pressure relief valves because fittings and components are so good at sealing that the normal small pressure increases due to thermal expansion can throw the sensors off ... In particular the reservoir fill level sensors.
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post #8 of 8
Thread Starter 
hmmm, i guess i should prob try replacing the o rings on the res and see if that helps then, pretty sure they may have the correct size at my local harware store, ill give that a try thumb.gif
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