The Vulcan Hart 00-719951-00046 Range Burner Orifice is a #46 natural gas orifice used in compatible commercial cooking equipment. Installed within the burner fuel system, it regulates the amount of natural gas entering the burner for combustion. The calibrated opening plays an important role in maintaining the intended fuel flow for the appliance. Its #46 size and specific part numbe... https://partsfe.com/orifice-46-for-vulcan-part-00-719951-00046