DDC Pump Version Differences & Evolution

[NaeKuh]

however honda showed us they use a different impeller.

and yes my sinks work well. theres a few tweeks i wanted.

the hole in the middle id say isnt needed, but you wouldnt get contact because it dips in.

the fan mounts id get rid of in favor or a screw driver access to remove tops

[faster3200]

So how Do i interpret

This Graph

So that I am only getting the 18W readings, I cant figure it out..do I just throw out any values above the 1.5 Amps line? If someone can list the values for the 18W flowrates/head pressure for the pumps on that graph I will plug them into my spreadsheet and then we will have the accurate picture...

That graph is sort of useless since it doesn't give pressure @ 18W. You get either pressure/flow @ ~20W (DDC 3.2) and ~21W (DDC 3.25) or Amps/flow @ ~16W-20W (DDC 3.2) and ~18W-21W (DDC 3.25). Assuming they used max spec voltage. If pressure was pressure/flow was linear it would be much easier to figure out. As it is, I don't think you can get max head from this graph. It is just useful to know that 3.25 is better than 3.2 in most situations.

[dsumanik]

Ok so i will make a new graph then, one with the common 18W (1.5A) data and then leave the other one as an estimate.

Its too bad we couldnt find pump curves all on an 18W graph, we could sticky this sucker then. Out of plain interest perhaps I will start to try and collect one of each of these pumps and do some testing.

[faster3200]

Ok so i will make a new graph then, one with the common 18W (1.5A) data and then leave the other one as an estimate.

Its too bad we couldnt find pump curves all on an 18W graph, we could sticky this sucker then. Out of plain interest perhaps I will start to try and collect one of each of these pumps and do some testing.

I am pretty sure HESmelaugh or Hondacity did 3.2 vs. 3.25 testing. They used tops though I am sure, so you can't just drop the data in.

[dsumanik]

I am pretty sure HESmelaugh or Hondacity did 3.2 vs. 3.25 testing. They used tops though I am sure, so you can't just drop the data in.

I have updated the OP to reflect common 18W data, and a disclaimer on the final graph.

If someone can supply me with Pump curves for both the 3.15 and 3.25 at 18W with stock tops...we will be able to complete the picture.

Anyone out there able to assist?

[gabe]

Gabe, start getting these newer DDC's into distro channels please!

OK.

[Waterlogged]

OK.

Thank you kindly.

[Brodholm]

OK.

Will the swiftech pumps be any different than the koolance ones?

[faster3200]

Will the swiftech pumps be any different than the koolance ones?

They might have feet, otherwise no.

[Waterlogged]

Considering the volume of pumps Swiftech sells, they'll likely (but not guaranteed) be cheaper as well.

[Martinm210]

Thanks for doing the comparison, good info!!