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Taco 5000 mixing valve as boiler-protection anti-condensation valve

timo888 Member Posts: 137
I have been thinking of installing an anti-condensation valve as recommended to me here.

But the Danfoss ESBE VTC is a cast iron valve and the pipe on which I'd like to install it is 1" copper. Danfoss suggested dielectrics. So I started looking for a brass alternative and found the Taco 5000 (which can take temps up to 210F). Would the Taco work in this application? It has a 1" copper version, but I'm not sure about the "Fail Safe" mode.

<a href="http://www.taco-hvac.com/products.html?current_category=116">http://www.taco-hvac.com/products.html?current_category=116</a>



  • hot_rod
    hot_rod Member Posts: 19,924

    it should perform the mix down, but check the Cv. Cv is the GPM the valve can flow with a 1 psi pressure drop.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • timo888
    timo888 Member Posts: 137

    The Cv of the 1" Taco is 3.8. The Cv of the1" Danfoss is 10.4.

    How to determine whether 3.8 is adequate?

    With the bypass valve fully shut, so that only the return's water was flowing through the valve back to the boiler, would the return flow be restricted to 3.8 GPM? Does the valve's Cv need to match the circulator's max GPM?
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