Abstract: The present invention is referred to a safety knob for domestic gas apparatuses of the type that includes a gas valve with a stem, and wherein the stem is pushed against the body of the gas valve to open and regulate the gas flow. The improvements comprising a knob having a body with a back flat section and one or more cavities or projections formed on the back flat section of the knob and a longitudinal orifice also in its back part, which is connected in coincidence with a free end of the stem of the gas valve. The knob includes safety elements for avoiding the axial movement of the knob, the safety elements having a series of projections, wherein the cavities of the knob and the projections of the safety elements are joined or separated one from another, for placing the stem of said valve in a unblocked or blocked position.

Abstract: The invention provides a knob with safety button for a domestic gas that includes a gas valve. A stem is integrated with the gas valve, which is pressed by the knob to press and to simultaneously rotate the stem of the gas valve for opening and regulating the flow of gas through of the valve. The improvements comprising a safety button coupled with the knob, the button being connected by one end with the stem of the valve, for avoiding that the valve be operated in a turn condition when the knob is only pressed, or for facilitating the turn of the knob when the safety button is pressed.