delta T circulator

chuck172 Posted By chuck172, Aug 25, 2009 at 1:49 PM

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  1. in hot water

    in hot water
    New Member

    Jul 31, 2008
    SW Missouri
    Look into a motorized ball valve, they consume power to open and power to close, no power consumption while open. just like a manual valve. They tend to have a higher Cv also with a full port opening. They do need a signal to open and close, they are not spring return. more $$ than a spring return valve of course.

    Here is a simple thermostatic zone valve a friend built.

    A greenhouse window operator, connected to a ball valve that he wound a spring around. as the room warms, the ball valve closes down. No power to open or close!

  2. Gooserider

    Mod Emeritus

    Nov 20, 2006
    Northeastern MA (near Lowell)
    If you had a link or a picture, it didn't come through, but the motorized ball valve does sound like what I had in mind for sure...

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