On 09/01/2019 17:55, Harry Bloomfield wrote:
After serious thinking newshound wrote :
Surely the jet is before the air mix holes? In any case, many jets
have a large diameter counterbore on the upstream side before the
actual metering jet.

Not so far as any spilled water is concerned. Water would spill out of
the air inlets, before it could get to the jets, then into the pipe work.

But if you follow the thread you will see that *I* wasn't talking about
spilled water in the gas. Spilled cooking water can deposit salt on the
burners. Water *in the gas* can spray out of the jets as an aerosol,
pick up dried salt on the inside of the burners, and carry it into the
flame.