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What is this device thermac tr-od for?

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NHPResident
NHPResident Member Posts: 9
in Domestic Hot Water
IMG_20260109_193632.jpg IMG_20260109_195241.jpg IMG_20260109_194535.jpg

This device is upstream to the water heater gas valve, I don't think it's serving any purpose now, as in I think gas just goes through it without "interacting" with it. I am curious about what purpose it might have served before.

It was made by thermac company with inscription tr-od and what appears to be HM.

Thanks for your advice!

Comments

  • Steamhead
    Steamhead Member Posts: 18,330

    It's an old pressure regulator that was used with a long-gone water heater. As long as the gas pressure is under 10" water column or so, it's no longer needed. The gas valve on the present heater has a regulator built in.

    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • NHPResident
    NHPResident Member Posts: 9

    Thanks @Steamhead , I will just leave it there then.

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