The utility model relates to the technical field of valve bonnets, in particular to a novel universal valve bonnet structure which comprises a valve bonnet, a
copper sealing sleeve, a rotation stopping spring clamping ring and a fixing pin. Two 90-degree fan-shaped lugs corresponding to the fan-shaped grooves of the valve
deck are symmetrically arranged on the outer wall of the
copper sealing sleeve, an annular groove is machined in the upper edge of the valve
deck, and the
copper sealing sleeve is installed in the valve
deck in the axial direction of the fan-shaped grooves of the valve deck through the fan-shaped lugs of the copper sealing sleeve. According to the structure, the reliability and the
machining convenience of the sealing sleeve in the valve cover are improved, meanwhile, the product
assembly process can be simpler, more convenient and faster, raw materials are saved, the
machining procedure is simplified, and meanwhile the production cost is reduced. And the assembling time is reduced, so that the working efficiency is improved.