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Steam Boiler to Baseboard Heat

Razza Member Posts: 2
I have a steam boiler and connected a hot water baseboard loop with a circulating pump to heat the basement. The problem is the circulating pump fails after a few months due to the high water temperature from the boiler. I've yet to find a mixing valve rated for water temps over 200deg. What can I install to temper the boiler water temperature to 180deg for the baseboard.


  • SWEI
    SWEI Member Posts: 7,356
    What kind of circulator are you using?

    You want a 3-piece design with a high temperature seal.  Wet rotors don't like very high temps.
  • JStar
    JStar Member Posts: 2,752

    The pump also needs to be bronze or stainless steel with a bypass line installed to temper thr water.
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