If you use another type of pump other than a centrifugal like the 
clear water pump, you definitely need to put in a sight tube 
because the level in the pump line is sometimes not accurate 
with other pumps. I had bad luck with cheap and small 
mag-drive stuff, haven't checked the link you posted though. I
ve never seen one of the blue Clear Water pumps leak, though 
the black plastic housing over the wiring does fall apart if you get 
biodieel on it for a year and expose it to the elements and then 
drag it around all over the place for classes like I did. Get the 
SUrplus Center catalog as well if you're looking at suppliers of 
gear.
mark



--- In biofuel@yahoogroups.com, Maud Essen <[EMAIL PROTECTED]> 
wrote:
> Todd, is this magnetic drive pump big enough for Mark's water 
heater design?
> 
> 
http://www.grainger.com/Grainger/productdetail.jsp?xi=xi&ItemId
=1611762438&ccitem=
> 
> Thanks.
> Maud
> <Todd replied to Sue...>
> >The pump you referenced is a clear water pump and is 
known to leak quite
> >easily. It would probably work. But put a drip pan underneath 
it. A magnetic
> drive pump would be a more leakproof option.
> <snip>


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