Ideal Water Pump

[4r4k4w4]

What's the ideal flow rate for a water pump? Since the water will take some time to completely heat up in the water block, what's the minimum flow rate that would allow the water to reach its maximum heat capabilitie?

[M00CH]

i was told that the min you should have is nothing under 150gph
even that may be to low.. idealy you want more gph if you have lots of hoses and a rad and northbridge and gpu cooling block

so i would say get one with around 300 - 500 gph...
most of the you can adjust the flow rate anyway..:)

[Athlonman]

what would be the best water pressure though?

[Krusty]

I just tested out my $15 500gph bilge pump yesterday and that sucker really pushes a lot of water! I just had a tube running in a little loop from the pump nozzle and back into the reservoir, so I would guess the flow is a bit restricted from the block and rad, but I really don't see why someone would need to push more water...yet. I could change my mind once I get my setup completed.

As long as I am talking about pumps, I had one question to bring up. If you have a complteely water tight system (and hopefully air tight) without much air sitting anywhere in it, wouldn't the whole system become a giant siphon? That way you don't need to worry about how high of an elevation you need to move the water because there is always an equal volume moving down to pull it along the way. I would think this would help immensely, but I dunno. Im new with the water thing.

[Warlord2]

min= about 100gph max= 1000gph

I have a 150gph pump going right now pushing water through 3/8 hose and 2 radiators and 1 wb so I would say Im in the 100gph or less range
and Im still getting pretty good temps

but I would like to say that normaly the bigger the pump the louder it will be so people usualy stop at ~300-350gph

[mr_kow]

yo krusty wherd yo get ur 500gph pump?

[Krusty]

Originally posted by mr_kow
yo krusty wherd yo get ur 500gph pump?

It's an attwood v500 bilge pump, model 4204. I have heard a few people say that using a bilge pump isn't as good as a fountain pump because the bilge pumps aren't made to run constantly. So we'll see about that. Also, it is a submersible pump, so I had to make a reservoir for it.

tee hee, my next post is 500, so I have to post the pic in a thread in general discussion.

Anyways, I can't remember the web site I ordered it from and don't have the recipt at my apartment, so I can't tell you where. If you do a search in, I think, cooling forums for bilge pump or attwood v500, you may find a thread with the link.

[Cluster]

A bilge pump should be available at a boat shop. Something for a small speed boat maybe.

Cheers:beer:

[4r4k4w4]

But how did you choose your pump? You just went to the store and asked for the most insane one ? :eek:
I want to buy the most eficient pump, not the biggest.


btw, how many l/h is 1 gph?

[UserName]

tricky question! Whos gallon?

Imperial gallon (Brits and canadain) is bigger than a US gallon.

[pudgy-duck]

Go to www.convert-me.com/en to convert anything to anything. Neat site.

Pudge

[FrozenInHI]

I would remain very leery about bilge pumps folks, they are not meant for long term usage. they're set up to work for short periods and then turn off. the impellers frequently fall apart in them, more than likely due to the type of water they move (oily, dirty,etc) but the MTBF, or mean time before failure, listings of bilge pumps is much shorter than that of aquarium pumps or pond pumps which are in fact designed for continuous usage. It's a risk you can take and if you use a dual pump setup you'll be saved, but if not, you'll be sorry. bilge pumps do have nice height pumping abilities with high volumes, but they aren't as reliable and their performance degrades faster. just a thought you might consider.

[4r4k4w4]

Just bought a 540 L/h aquarium submersible pump. Let's see how it will perform.

[Gravity Man]

Originally posted by Krusty
As long as I am talking about pumps, I had one question to bring up. If you have a complteely water tight system (and hopefully air tight) without much air sitting anywhere in it, wouldn't the whole system become a giant siphon? That way you don't need to worry about how high of an elevation you need to move the water because there is always an equal volume moving down to pull it along the way. I would think this would help immensely, but I dunno. Im new with the water thing.

now that you mention it, yes, it wold be a giant siphon.

Anyway, back to the topic at hand. I'm only using a 90 GPM pump, and my temps are generally between 33 and 39 degrees.

[Anonymous Jeff]

The higher flow, the better it is. Just like air.

You do come to a point of diminishing returns, though. Just like air. :D