American Outdoor Grill Automatic Timer One Hour Safety Shut-Off Valve (3092A)
This AOG 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 BTU's. and it can be used for both propane and natural gas Available at Appliance Spot
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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.