The principle of bellows cut-off valve is to add bellows to the sealing element of ordinary valve, the lower end and the stem assembly are automatically welded by roll welding, and the upper end and the connecting plate are automatically welded by roll welding, a metal barrier is formed between the fluid medium and the atmosphere to ensure zero stem leakage. The utility model has the advantages of good pressure and corrosion resistance, long service life and no leakage for a long time. The Bellows Globe valve adopts the bellows seal design, completely eliminates the common valve stem packing seal aging fast easy to leak the shortcoming, not only enhanced the use energy efficiency, increased the production equipment security, reduced maintenance costs and frequent maintenance, but also to provide a clean and safe working environment. Bellows Globe valve internal bellows structure, stainless steel bellows welded on the lower end of the stem to prevent process fluid corrosion of the stem. The other end is placed between the valve body and the valve cover to form a static seal. Double sealing design can also avoid leakage if bellows packing fails. Bellows are welded to the stem to maintain stable performance and avoid stem vibration caused by plug vibration. Zui is suitable for steam, inflammable, explosive, heat-conducting oil, high purity, toxic and other media on the pipeline. Bellow Globe valve features: 1, dual seal design (bellow + packing) if bellow failed, stem packing will also avoid leakage and meet seal standards 2, no fluid loss, reduce energy loss, improve the safety of plant equipment 3, Long Service Life, reduce maintenance times, reduce operating costs 4, strong and durable bellows seal design, to ensure zero leakage of valve stem, pTFE soft sealing material is used for gas medium valve seat to improve the sealing performance of the Valve 6. Cone hard sealing is used for high temperature resistant seat ≤425 °C. To achieve air-tight performance zero leakage