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Thread: Bad Gas Valve

  1. #14
    Join Date
    Jul 2006
    The ones I see are usually less than 500mv. I don't like for them to be much higher than that because the flame is too hot and distorts the TP or TC and they will soon need replacing.
    Common sense is NOT common !!!

  2. #15
    Join Date
    Feb 2004
    It's been awhile since I ran into this, but may explain your problem. I had the exact same symptom, and proved the t'couple good. I replaced the valve, that solved the problem. Then I autopsied the old valve and found that the valve core has a passage that maintains gas flow to the pilot when the knob is turned. That passage had become plugged with valve grease, turning the knob literally cut the gas flow to the pilot. The new valve solved the problem, but was a pita to change, certainly. Robertshaw valve.
    Question authority!

  3. #16
    Join Date
    Jun 2002
    Bemidji, Mn
    That makes some sense.. or debris coulda jammed into the valve. Customer says all worked fine until one day when the main shutoff was turned off and back on...
    You picked a fine time to leave me loose wheel...

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