Hi, I was wondering if anyone could help me out with my loop pressure. I have a purge valve at the top of my res because I think I am having hi pressure. So I have spent 2 days bleeding air from my system after some bad fluid and cleaning it up. So now that I have spent all that time bleeding it I feel like I have nothing but maybe some micro bubbles in the rads. My problem is when I turn my system on and the pumps spin up it drops the res about 20-25ml of fluid then when I shut it off it goes back up the exact same. Of course the valve is making some suction noises from the liquid going down then back up. Is the this normal? My setup is 4x 480mm by 45mm thick rads and a 240mm by 60mm rad. I have the system running with 2 D5 EK Revo pumps in series with a 140 X res. I am also using a auto purging primochill g1/4 valve on the res. Thanks in advance for help.

Sorry for the not so good pic but it's the best I can do at the moment. I don't know how there can be any air left in it with the amount of work I have done to remove it all. It is not easy to shake this thing around. It's about 100lb's

Humm strange. Give this a shot I uploaded it to PhotoBucket. http://i1064.photobucket....ay59j.jpg?t=1515802768
 
 
 

yup both outlets are on the top. I also stood the case on its back as much as i could before the pump would lose fluid. the front and both sides. the only thing left is upside down but that cant happens for many reasons lol
 

Have you looked at using this item?
$5.59 Pressure Valve Part No.  VLV-VL002K

As for pulling the rad's out I can but then there will be no way of putting them back in unless I give it a crazy amount of slack and that's just not good. With the Pressure Valve you linked I already have one that does that exact same thing, thanks though. Just a reminder I have sat the case almost all the way on it's back during me bleeding the air out so that all 4 480mm rads were at the same point during that moment and I did have a bunch of air running through when I was doing that originally. So I went back this morning and did every direction again and not a single bubble moving through the system no noise of air anywhere in my system and that is with 2 D5 pumps at 100%. I would think that if there was anything in there it would have worked it's self out by now. I am almost starting to think that this just might be a sort of normal occurrence with higher head pressure.

Thanks. Yea I had a corsair 750D Airflow before this. Loved it but I wanted to have a horizontal motherboard layout. Also when I saw I could add a bit more radiator to it I got pretty excited. I have tipped it left ad right as far as I could with out running the pump dry.