Ultimate Pumps?????

[tradbourne]

Check these pumps out: http://www.us.grundfos.com/web/Ph.ns...sUpCirculators

I had used a Grundfos pump in my floor heating system in my house and was so impressed by its quietness that I wanted one for cooling my new Athlon 1200. I chose the 3 speed 1542F rated at 750GPH. This is no plastic pump. Its stainless steel and weighs about 5 lbs, and has flanged connections. I paid $71 for it, which compared to what you all are paying for plastic jobbies seemed real reasonable.

Here are some test data on it.

All tubing 5/8" Braided PVC (10' total in system)
Pump - Grundfos 1542F
Waterblock - DangerDen Maze2 (1/2" barbs)
Radiator - Heater Core from Ford F150 Pickup. (5/8" connections)
(Real good clamps seem to pinch the 5/8 tubing down to fit onto the 1/2" barbs on the Waterblock.)

Flow Rate Pump Only with 10' of 5/8" tubing
High Speed: 563GPH
Low Speed: 409GPH

Flow Rate Pump and Radiator with 10' of 5/8" tubing.
High Speed: 360GPH
Low Speed: 285GPH

Flow Rate Pump/Radiator/WaterBlock with 10' of 5/8 tubing.
High Speed: 91GPH
Low Speed: 78GPH

What I found amazing is how free flowing the radiator was, but how much the waterblock choked the flow down????

What kind of flow are you getting in your system?

[mkosem]

yikes, serious overkill!!

--MAtt

[mkosem]

well, I guess it is a water cooling forum, so overkill is good!!

--MAtt

[redleader]

Christ! I'd worry something like that will leak like hell with all the pressure in that system.

You won't even get close to what its rated for. The 1/2 inch tubing alone would hurt you. That is if the internals of the Maze2 weren't a little less. Not to mention all the turns. Still with the kind of pressure that thing drives yours easily has the highest flowrate of any system I've seen.

I will admit that my 1250 seems a little girlish now. :o

[vfrjim]

My magdrive 500 gph flows @ 60 gph at the return line with all 3/8" fittings/lines with DD Maze2 and Blackice Rad, an extra 30 GPH at its high end is pretty good.

Jim

[tradbourne]

Well it doesn't leak a drop. Its as quiet as a mouse. Sure nice to get rid of that screaming Delta on the Thermoengine.

I like Q u i e t computers.

[tradbourne]

Update:

I am having one problem. The pump is sucking the tubing on the inlet side of the pump flat. (and this is braided PVC) I may have to hard pipe this sucker.....

[Def]

WOW!!! Sucking the braided PVC tubing flat!!!

That is some SERIOUS suction there. I can handle squeeze that stuff half closed with my hand.

My only idea would be to get an adapter to bump the hose size up one size, then get a brass ring about 4" long and place it inside the tubing. That will provide about 5/8" ID and will definitely not collapse.

And if it does collapse, I will bow down to your almighty pump.