Customer Questions and Answers for Gas Range Safety Valve by Whirlpool

Dave, No, it's not likely a faulty safety valve. It's more likely to be a fuel / air mixture issue. Remove and check the burner tube 74003960 Check to make sure all the openings are clean and open, the air shutter is adjusted properly (1/2 to 3/4 of the way open, then fine tune the mixture). Then check that the range hasn't been pushed back into the cabinet too far, and that the bottom drawer, and base aren't out of alignment or blocked by something not allowing the proper make up air into the oven for a proper fuel air mixture, and proper burn.