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    old honeywell #2 relief valve is it filled with mercury

    mikedo
    mikedo Member Posts: 256
    in THE MAIN WALL
    one of my plumber friends has an old honeywell #2 relief valve its 3ft tall and looks like theres a spaceship on top i think they are filled with mercury does anyone know if that is true

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    Comments

    • EBEBRATT-Ed
      EBEBRATT-Ed Member Posts: 17,515
      Yes they have mercury in them
      mattmia2
    • bburd
      bburd Member Posts: 1,149
      A.k.a. the Honeywell heat generator. Yes, full of mercury.
      —
      Bburd
      mattmia2
    • mikedo
      mikedo Member Posts: 256
      anyone know where to dispose of it properly
    • Jamie Hall
      Jamie Hall Member Posts: 25,860
      mikedo said:

      anyone know where to dispose of it properly

      Contact your State environmental protection people -- they will be able to guide you to a contractor or site who will be able to handle it. For, I might add, usually a handsome fee.
      Br. Jamie, osb
      Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    • JUGHNE
      JUGHNE Member Posts: 11,376
      If allowed to tip over might spill out mercury....a lot of it.

      Many government agencies have an "amnesty" day every 30-60 days at some collection point.
      Ours will take mercury, lead, small batteries etc.
      CLamb
    • CLamb
      CLamb Member Posts: 335
      JUGHNE said:

      If allowed to tip over might spill out mercury....a lot of it.

      Many government agencies have an "amnesty" day every 30-60 days at some collection point.
      Ours will take mercury, lead, small batteries etc.

      You might want to heat seal it in a sturdy plastic bag just in case.

      Here is an example of how you could dispose of it in Union County, New Jersey. Just label it a "mercury switch" which it is but not electrical.
    • Erin Holohan Haskell
      Erin Holohan Haskell Member, Moderator, Administrator Posts: 2,360
      Here's a video on the Honeywell Heat Generator: https://heatinghelp.com/systems-help-center/honeywells-heat-generator/

      And a podcast episode: https://heatinghelp.com/dead-men-tales/a-50000-dollar-mistake/

      President
      HeatingHelp.com

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