Electrolux E30GF74GPS Technical & Service Manual page 52

Inside the burner head the gas and air mixture is forced
out of the burner ports to be ignited by the igniter.
The gas for the simmer burner is injected into the tube
that is formed in the bottom of the burner base.
The tube directs the gas into the center of the burner
head, which is covered by the simmer burner base.
The simmer burner base has a channel that directs
the gas to the hole in the center of the simmer burner
base.
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