Pete C
August 10, 2018

Hi,

I have a 1980's Valliant boiler with baseboard fin convectors and there is no boiler protection installed. The issue I am having is that I want to install a mixing valve for boiler protection, but the pump is attached to the bottom of the boiler on the return line. It's a single pipe monoflo system and it works fine, my dilemma is that I would love to keep the system as is with a single pump, but after glancing over the install instructions for some of these mixing valves, I see that they are meant for primary secondary pumping. Can a mixing valve be installed without affecting functionality of the system while keeping it single pump?

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