snippet: Use this #31 hood orifice as a direct replacement for a worn or damaged orifice on a wide range of gas equipment from popular brands. By regularly inspecting, cleaning, and replacing gas components, you will help to ensure the safe operation of your gas cooking equipment. Orifices are a vital part of any service technician's stock and by keeping extra on hand you can be sure that you'll be ready to make any necessary repairs. This orifice has a 3/8-27UNS thread. (Page 1)