Flow rate, is it too low?

[Ballantin]

Hello,

First of all, this is not my first loop by any means, but until now I never had a real way to measure flow rate. Now I got a sensor fitted (I experienced some issues with my reservoir so I decided to install one).

Loop is as follows:

Koolance RP-452x2 v2 reservoir with 2x D5 vario pumps in series at max speed
EK Supreme HF with 6th plate (the one with a fine line)
2x EK GT980 blocks in parallel
Alphacool 360 rad (normal width)
EK 360 rad (double width)
Back to reservoir.

All is mounted with soft tubing, 19/13.

When I was testing the resevoir and pumps alone I was able to get around 11.6 gal/min. Obviously this was with a short loop, no radiators or blocks, but I wanted to check that the reservoir configuration was fine.

With the whole loop mounted I'm getting sometihg about 1.7 to 1.8 gal/min. To be honest I expected something more...

Do you think this figures are ok? Maybe moving to hard tubing will help increase flow?

Thanks guys!

[zanzabar]

you are supposed to run 1.2-1.5gpm so you should be fine.

[Conumdrum]

You could cut the pumps back to 50% and still have plenty of flow. Play with pump speed. When temps begin to climb you found optimum pump speed.

Blocks cause major restriction, that's how it is.

[dasa]

Maybe moving to hard tubing will help increase flow?

only way it would make much difference is if there was a change in the tightness of bends maybe removing 90 fittings for a gentler hard tube bend and i doubt you have any kinks do you?