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What is this?

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This is from an abandoned part of the system. I’m guessing it was an old air vent. Please let me know if anyone has any information on this device. 


Comments

  • Jamie Hall
    Jamie Hall Posts: 27,803
    more like a safety valve?
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    MK399mattmia2
  • Steamhead
    Steamhead Posts: 18,883

    more like a safety valve?

    Yup. The lever is for opening the valve manually.

    Co-Founder, All Steamed Up, Inc.

    Semi-retired

    Baltimore, MD, USA