I don’t think my title is very good but I didn’t want it to be too long
The way that my gas hob works is that I push in and turn
the knob of the burner that I want to use so that the gas starts coming out. When I activate the spark and the burner is lit I can stop pushing in the knob and the gas will keep flowing. If I stop pushing in the knob without lighting the burner then the gas stops flowing immediately, even though I haven’t turned the knob back to zero. Why does the gas not keep flowing like it does when the burner is lit?
In: Other
If you look closely at your burner you might see what looks like a tiny wire poking into the flame in one spot. This is a thermocouple. It is connected to a gas valve and will keep this open when the thermocouple is hot. But once the thermocouple becomes cold it shuts the valve and the gas can no longer flow to the burner. When you push the knob for that burner inn you are bypassing the thermocoupled valve so gas can flow to the burner even when not lit.
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