Can any one give me a link on how to caluate the gpm flowing thrugh a circuit setter. thanks
I would recommend Bell and Gossett's website. They have plenty of educational material that will help you with hydronics.
It might get loud!
b&g used to make a slide type chart for calculations. (mebbe they still do)
i'll post the id# if i can find mine
This should give you a good start.
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