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Steam leaking from main vent valve

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cdm
cdm Member Posts: 77
in Strictly Steam
My problem is that after a very long heat-up time and radiators are hot and at temperature, the pressure continues to build to 2psi. The burner turns off but steam leaks from 2 Hoffman 75s but not the Gorton #1 on one of my main lines. The other main line with a Gorton #2 is O.K. Does this mean the 2 Hoffmans are faulty?



thanks -cdm-

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  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
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    Probably

    Sometimes a soak in white vinegar will clean the mineral deposits out of the valve, but you'll need something to stick in the main in the meanwhile.
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24

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