Zone Valve - Comparison With Multiple Circulator Pumps

Comparison With Multiple Circulator Pumps

Multiple zones can be implemented using either multiple, individually controlled circulator pumps or a single pump and multiple zone valves. Each approach has advantages and disadvantages.

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    I have travelled a good deal in Concord; and everywhere, in shops, and offices, and fields, the inhabitants have appeared to me to be doing penance in a thousand remarkable ways.... The twelve labors of Hercules were trifling in comparison with those which my neighbors have undertaken; for they were only twelve, and had an end; but I could never see that these men slew or captured any monster or finished any labor.
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