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Unread 01-31-2007, 03:18 AM   #1
ibmkg
Cooling Savant
 
Join Date: Jan 2005
Location: USA
Posts: 129
Cheap water pump

OK people as you know I am finding alternatives to those expensive water pumps. i.e. no more than USD 15 yet powerful than a USD 80 dollar pump .

My actual aim is a relatively inexpensive DIY WC solution.

List that I had was:

a) Car Fuel Pump ... Fault : Carbon bush wears out, will not work for WC.
b) Car's windscreen washer Fault: Not made to operate for long hours and low flow.
c) Aquarium pump: Fault: Low flow, low-pressure head and runs on AC.
d) Washing machine pump. Fault: Works on AC power.


Well, amongst all, option d comes with less disadvantages so I gave it a go.

Washing machine pumps are made durable. They are very long lasting; one can find it in junkyard or can remove it from old washing machine or order the part from a dealer. In any case, it does not exceed USD15.

It has good pressure head and nice flow. Keep in mind it is made to flush the washing machine (lot of water).

I did a test run in my loop and compared to MCP655, it has noticeably larger flow and better pressure. I am assuming its ~400GPH.


If you see the pic, it has a plastic impeller separated from rest of the pump. Thus it transfer very little heat (almost nothing) when compared to MCP655 in the loop. It cannot burn out since it has a fan that keeps it cool (keeps the winding cool). Nevertheless, if anything is to go wrong, all it needs is a winding replacement, which any one can do with a little Google help.

Comments are welcomed.
Attached Images
File Type: jpg Pump 1 side shot.jpg (20.9 KB, 38 views)
File Type: jpg Pump 1 with temp reservior.jpg (43.6 KB, 31 views)
File Type: jpg Pump 2 impeller shot (from front cap removed).jpg (34.6 KB, 27 views)
File Type: jpg Pump 2.jpg (37.0 KB, 31 views)
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