A gas burner assembly

A gas burner assembly comprising:

• a burner body comprising a base plate, an outer circumferential wall and an inner circumferential wall, said outer and inner circumferential walls extending upward from said base plate and defining therebetween a mixing chamber, an inner surface of said inner circumferential defining an upper portion of a Venturi pipe, said Venturi pipe further extending downward from said mixing chamber, said base plate, outer and inner circumferential walls and Venturi pipe all being formed together as a single piece;
• a gas injector arranged below the Venturi pipe and a primary air inlet arranged between said gas injector and said Venturi pipe;
• and
• a burner cap formed as a sintered circular disk having a convex central portion, and a plurality of flame ports in said convex central portion;
• said burner cap being arranged on and extending substantially horizontally over the burner body such that said convex central portion defines an upper wall of said mixing chamber and said flame ports are disposed above said mixing chamber.