This is picture of my gas stove. There are two gas lines you can see, each controlled by knob and going to burner. Where I circled, there is a small slit , I am wondering what is that for ? Why wouldn't gas leak from there and catch flame ?enter image description here

1 Answer 1


The gas is mixed with air before going to the burner, the slit allows air to enter.

The gas does not leak from there becase there is a jet of gas causing a wind current blowing down the tube to the burner.

  • 3
    Otherwise known as a venturi ; the flowing gas sucks in air. Without it the burner flame would be yellow/ orange and put soot on pans. Commented Jan 18, 2020 at 1:40
  • 1
    @user2716454, think of a garden hose and a puddle ... if you spray water into a puddle at an angle, the water stream will drag the water in the puddle and empty the puddle ... the gas stream is like a water stream from the garden hose, it drags the surrounding air along
    – jsotola
    Commented Jan 18, 2020 at 2:25

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.