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Is This Overkill

I was thinking about a P/S zone valve system that I'm designing.  Is it worth the time and money to put ball valves on either side of any component that could fail, such as zone valves, air seperator ect.  Thanks


  • hot_rod
    hot_rod Member Posts: 19,877
    careful placement

    of valves will allow them to serve multiple purposes. No need to isolate zone valves and separators. Most all zone valves have remove able powerheads, the bodies seldom need replacement.

    Air and dirt separators often include blowdown valves to remove debris.

    Isolate circulators, although the built in check valves could be used to isolate one side, to change a motor.

    Here is a drawing where one properly placed Webstone Purge Ball Valve, and a few iso flanges can isolate and purge multiple loops and the indirect tank.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
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