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Thread: Changing Old zone valves to Circulators

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    DIY Junior Member kwieg1's Avatar
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    Nov 2010
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    Default Changing Old zone valves to Circulators

    I have a Smith Cast Iron Boiler that supplies 6 zones of hydronic baseboard. As iot is piped now, it is a 2 pipe direct return system with boiler pump and 6 white rogers zone valves. The zone valves are starting to go bad and getting annoying to replace and want to replace the with Circulators + switching relay. Do you see any problems with keeping boiler pump and adding 15-58 grundfos brute pumps instead of the Zone valves?
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