Abstract: A gas fired cooking grill having a twin burner element initially adapted for dual gas supply lines is disclosed as including an adaptor manifold for converting the twin burner element to a single burner element for a single gas supply line source. The adaptor manifold includes an enclosed chamber which is mounted in sealed engagement to the burner element and has an adjustable mounting for connection to a single gas supply line source.

Abstract: An adjustable gas tube assembly is disclosed for use with gas consumption means (including gas barbecue grills) and includes a gas delivery tube having a tubular air regulator member mounted therein at one end. The tubular air regulator member includes at least one elongated lateral opening which is selectively exposed, as desired, as the tubular air regulator member is inserted or withdrawn from the gas delivery tube. The tubular air regulator member is preferably provided with a restricted throat for gripping and retaining a gas supply tube section connected to a gas supply source. The tubular air regulator member is also preferably used with a flexible and expandable gas delivery tube.