Device for controlling a gas dispensing opening formed in a body of a torch apparatus, said control device comprising a valve of axis X, intended to be mounted via a helical connection in a passage of said body which communicates with said dispensing opening, and to be moved by means of an operating head between a position that closes the dispensing opening and a position that opens the dispensing opening, the operating head being equipped with means for limiting the travel of the valve moving in the direction of the position that closes the dispensing opening, the operating head comprising a cylindrical drive ring extending in the X axis, the means for limiting the travel of the valve comprising a flywheel rotatably mounted about the X axis on the drive ring and having an inner wall adjusted to the diameter d of the drive ring, characterized in that the means for limiting the travel of the valve further comprise: - at least one notch, of axis Y perpendicular to axis X, formed in the circumferential wall of the drive ring, said notch being delimited at least by a bottom extending in a plane parallel to axis X, two opposite walls (23a, 23b) and an inner wall, - at least one groove, of length L, provided in the inner wall of the flywheel, having first and second ends (20, 21) between which its depth decreases on the basis of a clockwise rotation of the flywheel around the drive ring, and - at least one ball slidably mounted in said notch between an active position in which a portion thereof is housed in the notch and a portion is housed in the groove, and an inactive position in which it is housed entirely in the notch. the operating head comprising a cylindrical drive ring extending in the X axis, the means for limiting the travel of the valve comprising a flywheel rotatably mounted about the X axis on the drive ring and having an inner wall adjusted to the diameter d of the drive ring, characterized in that the means for limiting the travel of the valve further comprise: - at least one notch, of axis Y perpendicular to axis X, formed in the circumferential wall of the drive ring, said notch being delimited at least by a bottom extending in a plane parallel to axis X, two opposite walls (23a, 23b) and an inner wall, - at least one groove, of length L, provided in the inner wall of the flywheel, having first and second ends (20, 21) between which its depth decreases on the basis of a clockwise rotation of the flywheel around the drive ring, and - at least one ball slidably mounted in said notch between an active position in which a portion thereof is housed in the notch and a portion is housed in the groove, and an inactive position in which it is housed entirely in the notch. - at least one notch, of axis Y perpendicular to axis X, formed in the circumferential wall of the drive ring, said notch being delimited at least by a bottom extending in a plane parallel to axis X, two opposite walls (23a, 23b) and an inner wall, - at least one groove, of length L, provided in the inner wall of the flywheel, having first and second ends (20, 21) between which its depth decreases on the basis of a clockwise rotation of the flywheel around the drive ring, and - at least one ball slidably mounted in said notch between an active position in which a portion thereof is housed in the notch and a portion is housed in the groove, and an inactive position in which it is housed entirely in the notch.