Analysis of the reasons for the widespread use of bellows globe valves

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　　The bellows globe valve is a type of globe valve and one of the most widely used valves. It is popular because it experiences low friction between the sealing surfaces during operation, is durable, requires little opening height, is easy to manufacture, and convenient to maintain. It is suitable not only for medium and low pressures but also for high pressures. The closing principle of a globe valve is that, through the pressure exerted by the valve stem, the sealing surface of the valve disc comes into close contact with the sealing surface of the valve seat, thereby preventing the flow of the medium. It can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oils, liquid metals, and radioactive materials. Therefore, this type of stop-check valve is very suitable for cutting off, regulating, and throttling. Due to the relatively short opening and closing stroke of the valve stem in this type of valve, as well as its highly reliable shut-off function, and because the change in the valve seat opening is proportional to the stroke of the valve disc, it is very suitable for regulating flow rate. 　　The bellows-sealed globe valve features a bellows-sealing design that completely eliminates the problem of rapid aging and leakage associated with the packing seals used in conventional valves. This not only improves energy efficiency, enhances the safety of production equipment, reduces maintenance costs and frequent repairs, but also creates a clean and safe working environment. Advantages of bellows globe valves: A dual-sealing design (bellows + packing) that prevents leakage even if the bellows fail, as the valve stem packing will also act as a barrier. It prevents external leakage and meets international sealing standards. There is no fluid loss, which reduces energy consumption and enhances the safety of plant equipment. Long service life, fewer maintenance visits, and reduced operating costs. A robust bellows-sealing design ensures zero leakage of the valve stem, providing maintenance-free operation.