A gas grill orifice is a basic catering equipment that controls the gas flow from the propane tank to the grill’s burners. The orifice can be located near the burners and adjusted so that the gas amount leading into the grill can be controlled. It achieves precise control of flame by restricting the flow of gas through a small hole, where this is necessary to achieve the best cooking ... https://www.partsfe.co.uk/grill-parts/gas-grill-orifice