Water level decreasing

[ChrisZH]

Hello so I just filled up my loop and I know there were bubbles that will gradually drain out and cause water levels to decrease. I do also have a vent valve over my fill hole in my distro block. Could this also be some form of an evaporative issue?

 

I did. leak test it and kept it running for 3 hours to see if I had any form of leak and there was no water on paper towels I left around the fittings.

 

is evaporation something to be expected because technically it is not closed off completely but instead has a vent valve to get rid of air pressure(I think?)

[Mick Naughty]

Should always expect it to evaporate. But more so just more air slowly getting out of the loop. 

[ChrisZH]

1 hour ago, Mick Naughty said:

Should always expect it to evaporate. But more so just more air slowly getting out of the loop. 

Was it a good idea to use the purge valve kind of fitting or to just close it off entirely?

 

I was worried about the pressure getting to be too much when it warms up, ya know?

[Mick Naughty]

12 hours ago, ChrisZH said:

Was it a good idea to use the purge valve kind of fitting or to just close it off entirely?

 

I was worried about the pressure getting to be too much when it warms up, ya know?

I do both. Depends on the rig and how longs its been together.  Doubt it will build enough to cause an issue though.

[fonzz1e]

nah don't need a purge valve, my 1 year old custom loop still works fine without it

 

if u see coolant level drop, u can always top it up... so far I only done once on my loop

[thrasher_565]

hard to say why it evaporate. its diffrent per system it seems.