It looks pretty nice; it looks like about 3' head loss at 4 GPM.
The only thing I don't like is that it only goes to 4 GPM; my pump gets that at 5' head. of course, if I run it looped with my system I'll get more than 5' head loss, but still I'd rather it at least went to 5 or 6.
I'll have to see what I think of pHaestus', $10 is a pretty good price though.
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