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3 way valve-diverting or mixing

can anyone explain exactly how this 3 way valve works


  • ScottSecor
    ScottSecor Member Posts: 726
    I think the arrow on the left side of your drawing may be oriented the wrong way.

    If I'm correct,  P4, P5 and P6 may require lower water temperature?   I'm guessing the mixing/diverting valve allows some water to bypass.

    On second thought, we need to see the system returns and how they tie in.
  • ScottSecor
    ScottSecor Member Posts: 726
    Maybe a few photos would help.
  • hot_rod
    hot_rod Member Posts: 19,921
    Possibly labels on the valve A, B & AB.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream