they appear to be 24V - also only the 3/4" versions show as much head as the mcp600....

Clarksol is not the manufacturer. They rebadge also.

The Solution
 

HI everyone!
My first post at Pro/Forums :)
I realized recently that I rfer back here more and more often and decided to join your ranks fellas and I am honoured to be a member of this magnificent society.

Back on track.

I decided to go different route in search for massive head/flow/price ratios - to cut long story short I am running my system (extremely restrictive setup) on domestic heating circulation pump Wilo Gold 50.
Most of my system is hard plumbed to avoid unecessary restrictions, and I use MCW5000P-T and MCW50-T to cool my H'ware. North bridge is air cooled (want to TEC it ASAP since it's the biggest 'heater' in my system at the mo - almost fanless and certainly silent design, all I can hear is Enermax's fan:) ).
Anyway, pump is so strong that water cavitates at max speed setting and when I first tested it with some pieces of thin walled tubing suction pressure was causing this tubing to collapse on itself !! :D.
I am over the moon with this pump, cost me a pathetic £36 at B&Q (can get it much cheaper), but...., yes, there's a thorn here, it runs HOT (since it's for central heating purposes) and to combat this I used 92mm Zalman @5v to cool it's casing (it's bolted to the outside of my chieftec tower). I went for Wilo since it was much cheaper than magical Grundfos (which probably runs colder since it's the best quality on the market).

Anyways, I am not going back to centrifugal horrors any more ;)

EDIT: typos

Do you have any page for that pump so we can check it?
We normally are searching for this expensive pumps, because, one of their major advantages is that they are as powerfull for pc watercooling as pumps that consume 3 or 4 times more.
So, they add much less heat than the other pumps to the water, improving the cooling eficiency of our systems.

Ah, and welcome to procooling.




You sure? :evilaugh:

Now better ? ;)

Thanks for warm welcome ( he he he)

Here is your link
What do you think folks? :cool:

http://www.gold-nuggets.co.uk/gphgold5.gif

40w input at low setting (60 and 88 med and high)
looks like the even more insane gold60 is only about £5 more...
http://www.gold-nuggets.co.uk/gphgold6.jpg
46/67/93 watts...

so, the under $80 question is, how noisy is it?

It is, believe it or not completely silent. Al I can hear when like having my ear 25cm away is slight cavitation noises at top speed setting - inaudible.
I went for smaller one hoping for less pump heat dumped into my loop.
Oh, it's of course mains supply :)

Well, the PQ curve for the Gold60 at low setting is roughly about the same as the Laing D4 at 12V, and the Laing D4 is consuming ~19W (between 15-21W depending on restriction).

The Gold60 at high setting is roughly equivalent to the D4 when run at 16V, and the D4 is consuming ~24W or so at that level.

BUT- its cheap
guess you get what you pay for

I don't see that in the numbers..

From Cathars graph above at 2M the Laing is flowing like 3.25GPM and the Gold 60 (low) looks like 1.5-2GPM. Double the heat, half the flow.

Gold60 (high) is more like 10.5GPM@2M... not sure what the flow is like on the Laing beyond the 12V mark but its hard to believe its close to 10.5gpm@2M head.

Not to mention that the heat output would overwhelm most 'typical' setups.. the pump bearings on the Gold60 list as wet which seems to mean that the heat output is pretty much going to dump into the water.

Cheap yea... and the Gold series has a manufacturers warrantee for 24months.. Brass or cast iron pump.. heavy.. hot....

If I was Airspirit.. 3+ computers.. Yea the Gold60 would look good...

Hard to vote for the Laing for the noise issues above 12V, but it sure seems like a nice choice for price/performance/heat....

hmm - i suspect that the Gold graph will be imperial gallons not US (since it's a uk pump...)

surely the point would be to use one of the higher power settings - gold 50 on mid (60 watts - about the same as an iwaki md30) is about 6(uk)gpm at 2m head... or perhaps more realistically 3.5(uk)gpm at 3m (since i doubt any waterblock etc would have a 2m head at 6gpm...)

and is about the same price as an eheim 1048 :)

my (anticipated) reservation would be pump life.... as it may be guaranteed for 2 years, but thats in a central heatiing operation, where it's not normally running 24/7 (even if the heating is on 24/7) afaik...

Cast Iron scares me.

If you think aluminum is bad, take a peek at the galvanic potential for cast iron.

And that two year warranty is only good if you use a 50/50 water/antifreeze mix.

Central heating pumps do tend to run 24/7 if you have the heating on all the time. Generally the pump is always circulating water and the boiler just switches on and off to maintain the required temperature.

are you sure - afaik the boiler fires to maintain the required water temperature, but the pump would only circulate water round the system when the thermostat turns the system itself on - when the room temperature is high enough then it would be off...

the 24 month warranty (which is from date of manufacture not purchase) is subject to it being installed in accordance with their O&M manual...i doubt that pc watercooling would fall within that ;)

My general point was to test and prove that one can use central heating pump in WC system with success. I think I proved it to be the case. My temperatures are phenomenal if you consider that my system is fanless, do not require digging trenches in back garden ( ;) ) and is powered by a pump which dumps massive amount of heat into water loop (system is quite small, just employed some very basic solid state physics in revolutionary way, and it's dirt cheap and anyone can do it at home :) ).
Water temps are no more than 34C and before with Saab all copper heater core cooled by ~300CFM of fans sounding like space shuttle taking off it was 28 C ! :).

In my book for this amount of ££ I got massive head to flow power.
Only down side is lots of pump heat dumped into my loop which is easy to overcome ( I read somwhere that sb wanted to water cool his pump - I suppose I am just doing this ;) ).
Life of pump is more than 5 years on average from my experience, central heating pumps DO NOT FAIL almost at all. From my professional experience the only time pump is changed is when new boiler is coming in with general CH system overhaul or there was an installation error. The other thing is that in computer cooling pump is running very much less load than house central heating.
Lastly I run demineralized water with antifreeze additive all for car cooling system.

EDIT: It's Ethylene Glycol based coolant good for -65C at 60% water solution. I added roughly about 1/8th of the botle (1litre) into 3litres of water.

I must admit I did look at central heating pumps at one stage... they're rugged and quiet. But they're also big, heavy, and do not have the highest of flows...

Today I've been mostly leak-testing my circuit which includes the Johnson CM30P7-1. It has a low volume whine, but puts out some serious flow! I'm keeping an eye on its operating temps. Fingers crossed.

Given the speed of the flow, I think I can in future easily replace the pump with that Australian model, and sacrifice a bit of flow for longevity. After all, flow don't mean a thing, when the pump fails...

:( Hi Nexxo!
Don't bother about the longevity as long as you have a failsafe (Asus COP, BIOS shutdown on CPU overheating, or any kind of flow monitoring)...
I currently use a Eheim 1250 (which is way to weak with the restrictive setup I have actually).
I just replaced my Maze3 with "THE" Cascade WB :D , have still to leaktest it and I'm really curious about the final flowrate (4.40lpm with the Maze3, probably a lot lower with the Cascade).
I also currently own two Johnson C030's from Surplus Center which have a GREAT flow (apart from their leak and longevity issues).
The Johnson is about the maximum noise level I can stand for a waterpump (compared to my silent 1250), so the Laing D4 is out of the question for me...
I will probably use my two Johnsons until they fail or break down (I payed an equivalent of 200+ us$ for them... :( )
Another option is to power the Johnson though a variable PSU and lower the applied voltage (as it's quite overpowered for my setup). See also my post at OCAU

CD :)

PS: Liked to buy and test an Swiftech MCP600 if I can finally find an european distributor for it (VAT and import taxes from the US are killing me...)

:eek: :eek:

125 Euro for something that sells in the USA for 66 Euro (not including taxes).

125 Euro is $201 Aussie. The MCP600 sells here for $142 Aussie (which includes all applicable taxes), which is about 88 EUR, and Europe is a heck of a lot closer to the USA than Australia is.

Yes i already knew that shop but i prefer to wait... geeze.

welcome to rip-off europe... :(

19% VAT in the Netherlands - so its 105 Euro+ tax

only UK supplier
http://store.over-clock.com/Pumps___Accessories.html
charges £58.57 (but has no stock) just under £50+17.5% uk VAT - which is about 10% more (pretax) than the US rrp...

its also sold here but they don't have stock iirc
http://www.aubonmicro.com/Recherche2...tere3=SWIFTECH

1 question:

If anyone here was kind enouf to buy one and send it to europe, the VAT and other taxes would apply?

legally yes - how likely portugese customs would be to pick up on it i have no idea...

these US sellers will export...
http://www.frozencpu.com/cgi-bin/fro...ex-pmp-15.html
http://www.sidewindercomputers.com./swmcinpu.html
http://www.cooltechnica.com/Merchant...ategory_Code=P
http://www.xtwerkz.com/liquid_cooling_parts.htm

Available for €70 here and that's a UK supplier so likely to be cheaper on shipping and customs than US.

When I get something ship here (Canada) from the US and ask the seller to declare it as a gift, I wont pay any custom's fees nor taxes. Only downside is that the maximum value is pretty low (cant remember if it is 50 or 100$).
Something similar might be in effect in your country.