This Fire Magic safety gas shut off valve automatically shuts off the gas flow at preset intervals of 20, 40, and 60 minutes. it has a 1/2 inch inlet and outlet, with a flow capacity of 100,000 BTUs. and it can be used for both propane and natural gas applications.
So, if you're the type of person that forgets to shut the gas off, or you're just looking to add a little more safety to your grilling area. Then this automatic timer shut-off gas valve is for you.
Check out timer instructions: 1-hour Automatic Timer Instructions