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central heating pump 3000 l/h for free !!!!!

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michael westen

michael westen

Member
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Joined
Dec 23, 2001
Location
holland
Hi dose any one ever try to use a central heating pump to use in a water cooling system they can be found by the thousand’s on the scrap yard they are build to lest for ever almost
and pump a round 3000 L/h hey not bad for a freebee ore not more then 5$
so dose anyone bin using this pump’s and what’s ore experience whit them the come whit 1" conections so its easy to pute a 3/8'' ore 1/2" hose's on them :)

greetings michael
 
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here are some photos of the sort of pump i want to use

flange to flange is 18cm(7")
 
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I've never seen anybody mention them, but it doesn't seem like a bad idea. What are the flowrates and pump life on something like that?
 
Those look like something that one would use for a commercial Domestic Hot Water System. They are used as recirc pumps (So you always have hot water on hand). These things are expensive new, but used??? I don't know if I would trust something from a scrap yard though (I would think it is scrap for a reason). They only usually last in a DHW system for about 3 or 4 years before they need rebuilding or replacement. Grundfos is a company that comes to mind that make these things.
 
here in Holland are they used in central heating systems those systems usually run for a bout 20 years and then they are replaced because the gas heaters and the rest of the system is getting old but the pumps usually keep’s running
but sometimes u will find also 5 year old systems whit pumps that are pretty new and if they start to ware out they start making noise so you just get a new one for free ore 5 bugs or so

They pump around 1000 to 5000 l/h (250 to 1200 gal/h) (got one here I can a just between 1000 and 5000l/h) and think they will lest me at least around 5 years, I ask my uncle he is a plumber and that's what he is saying and I was think a bout the same time
 
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Just a suggestion. Why dont you buy one and hook it up to a mock waterblock and run it for a couple weeks to see how it performs, before you commit you expensive CPU to the idea. If it runs without any glitches then you could modify one for you computer.
Just a thought.
allan
 
seems like a good idea. They also seem very small, or is the pic just decieving me? :)
 
tft said:
seems like a good idea. They also seem very small, or is the pic just decieving me? :)
Click to expand...

They are actually kinda big. The top picture is probable made for a 1 inch copper pipe. They may be a little too big to fit into the case.
 
Since these things only run when the thermostat kicks in, then they might not be designed for continuous duty. Dunno what average duty cycle would be for designed life of 10 years or so, if it was only like 20% then you'd expect them to last maybe 2 years from new or something.

Road Warrior
 
paupton said:
Just a suggestion. Why dont you buy one and hook it up to a mock waterblock and run it for a couple weeks to see how it performs, before you commit you expensive CPU to the idea. If it runs without any glitches then you could modify one for you computer.
Just a thought.
allan
Click to expand...

Ooo I sure will !!!
but just was wondering if anyone here done the same seen a lot of salvage jobs done here and was thinking that I codent be the first of thinking of this so its always nice to pick someone else his brain first :D
and not invent the wheel again :)
 
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KingB said:


They are actually kinda big. The top picture is probable made for a 1 inch copper pipe. They may be a little too big to fit into the case.
Click to expand...

yes flange to flange is 18cm(7") but i i have a semi server case so it will fit i think
 
rivercom9 said:
You think that you can fit one into a large case? Not that Im gonna use one or anything, I am just curious.
Click to expand...

yes it wil be no problem i have a wide body case so it will fit easy ore if have a maxi tower that isent to filled up to muths it will work fine ;)
 
is there realy nobody here that uses a pump like this ore try it cant beleve that :rolleyes: on paper thay are so great so why nobady uses i cant understand
 
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