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water in rad vents

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Jeff_44
Jeff_44 Member Posts: 94
in Strictly Steam
What is the cause of left over water in radiator air vents? I have a one pipe system - no water hammer or noise but have water in some of the rad vents. Any thoughts would be appreciated.



Thanks,

Comments

  • conversiontime
    conversiontime Member Posts: 87
    spitting water?

    If the vents are spitting water during cycle, then wet steam is likely the culprit. IMO dry steam will cause the vents to hold a tiny bit of water once the boiler stops firing and steam condensates. Every rad vent I have ever removed held a tiny bit of water upon inspection whether by design or fault, I do not know.
  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,917
    Some is normal.

    Pushing warm, damp air through a cold metal vent, you have to expect some condensation.
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
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