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Old heating system fitting

kmbop50
kmbop50 Member Posts: 1
in THE MAIN WALL
I was in an old home last week and saw one of these fittings on one of the hydronic returns. I’ve never seen on before (that I’m aware of). I couldn’t figure out what it is. Any ideas?

Comments

  • Steamhead
    Steamhead Member Posts: 17,387
    It's an old safety valve. The plug in the bottom was where the discharge pipe was connected. I can't see the writing on it, but it doesn't look like a Thrush................
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
    kmbop50
  • kmbop50
    kmbop50 Member Posts: 1
    Wild. I never’d’ve guessed that. Thanks.
  • neilc
    neilc Member Posts: 2,854
    you do have another safety valve there somewheres,
    CORRECT ?
    known to beat dead horses

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