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  1. James Ascherl Member

    joined: Jun 6, 2010
    66 posts
    Hinckley, Ohio
    I have installed a Taco 573-2 zone valve at the top of my storage. Water will flow both directions depending on whether the tanks are charging or the demand is from storage. The valve has a directional arrow on it. Which way should I install it?
    #1

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  2. bupalos Member

    joined: Jan 26, 2009
    163 posts
    ne ohio
    bump, because I don't know the answer here but need to.
  3. in hot water New Member

    joined: Jul 31, 2008
    895 posts
    SW Missouri
    If it has a directional arrow, then is is designed to flow one direction. Most two way zone valves are designed to shut off against flow with a spring return or thermo electric operators. Those big, boxy White Rogers 1311 could possible flow either direction. It has a slotted spool and motors open and close.can

    A three way zone valve can flow one of two different directions. Or a motorized ball valve could flow either direction.

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