Why do you usually have to hold down the gas button for a few seconds when lighting a stove or gas oven to keep it lit after you release the button?

Question

Why do you usually have to hold down the gas button for a few seconds when lighting a stove or gas oven to keep it lit after you release the button?

In: Engineering

Answer 1

There is a thermo-couple that shuts down the gas supply if there is no flame. It needs to warm up @ the start. If this wasn’t the case you could flood the room with gas.