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Hot water zone control valve

hubbell Member Posts: 1
When a zone control valve closes is it normal for some water to get by and keep the baseboard warm?


  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
    No. Might be hanging up.

    There was an error rendering this rich post.

  • hot_rod
    hot_rod Member Posts: 22,330
    And sometimes you can get some reverse flow. Zone valves on the return of a multi valved systems.

    Or too large of a circulator for the valves to close against.

    If it has worked in the past, no other changes, I'd suspect crud in the seat or a stuck actuator.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream