Just getting started in on a whole bunch of DDC pump top and reservoir top testing. Special thanks to Coolmeister, Petra, NaeKuh, XSPC, and Danger Den for the loaner and sample tops for testing. I think I have just about every top/res top there is including a few new ones.

I have a DDC3.2 fresh from Petras I bought a few weeks ago, as well as some old DDC2's I got in a trade.

I had planned to at least run the DDC 3.2 at 12.0V, but I was wondering. How many people are overvolting these pumps? Would you want a curve at 13.2V also?

Then there is the DDC2's, I think one is either about to die or a 10W version. It has a black impeller, so I'm thinking it may just be a 10W variety, then I have an orange impeller DDC2 that should hopefully be working ok.

I have about a dozen or more different top from several people stacked up here, so I'd rather just run maybe one 12V curve for the DDC 3.2 and one for the DDC2. But if there is enough interest, I'll consider other tests as well.

Here is my new pump test setup. I built a new test reservior with more elevation which does a nice job of almost instantly bleeding the system. I also built a new screw type gate valve that gives me much finer control over restriction/flow rate. I'm also zeroing out any static pressure in the digital manometer that's created by the reservoir and system up above my measured pressure point. This is one really nice feature of the manometer , so I'll be reading true pressure added in by the pump.



And this is what I was thinking for individual pump results. A standard Pressure vs Flow rate type chart. Blue line is the pressure or left axis, and red is the power consumption in watts. Then I'm following suit on my AP1510 test to plot an efficiency curve to get an idea of how the efficiency shifts with different tops.

Anything special you want to see?

Here is my first test of a plain stock DDC3.2 (Swiftech MCP355) at 12.0V: