Vermont casting gas stove

[JoeW]

I just replaced the thermocouple and here is what I have. Pilot light lights and stays lit with big blue flame, however when I flip the gas to on the pilot light goes out. I'm thinking it's now the gas control valve, but thought I'd ask

 

[Millbilly]

Yes bad Valve..but make sure the stove itself is shut off and turn the knob from pilot to on very slowly. Try it a bunch of times. Those Honeywell valves can be very finicky.