Quote Originally Posted by Cuppa View Post
What sort of flow do you need?
I recently fitted a 12v D5 Vario pump to our truck to circulate hot water (Hydronic heating). Has 5 speed settings & a max flow of 25 Lpm. Uses bugger all power & does the job for me.
Cost me $422.
They are set up for solar pumping, but commonly used for computer cooling by 'overclocking gamers'.
Cuppa i am looking at around the 25-30lpm, but it needs to be real flow, not some pump curve estimation. For that reason I am going to install a flowmeter in the line to validate. i did this with the interchiller pump and it delivers 40lpm, verified. Unfortunately that pump is now 41300 and I am not outlaying that for this revised circuit. I have bought the Aeroflow on the basis the rated output is 40lpm against a pressure of 10kpa, so will see how that works out. My only reservation is its a mag drive and unsure just how direct the flowrate is in reality, shear effect from the drive connection, as opposed to a direct drive where the amps simply go up or reach a plateau and it stalls. The Davis craig mag drive units i have tried were pathetic. Aeroflow make good lift pumps so will see.