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Thread: Boiler and water shut off if leak

  1. #1

    Question Boiler and water shut off if leak

    Is the following true? If an indirect tank or the boiler itself has a leak, would the incoming water will be stopped by the boiler's low water cut off? So NO FLOODING?

  2. #2
    Plumbing Contractor for 49 years johnjh2o1's Avatar
    Join Date
    Aug 2009


    Low water cut offs prevent the boiler from firing. They don't turn the water off.


  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    And, if you have an auto-fill valve, and you don't close off the feed to it once the system is initially filled, if you had a leak, it would keep trying to keep the pressure up (i.e., filling) on the system.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  4. #4


    Thank you! Education at this forum is really great!

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