在高溫情況下，閥桿不與介質接觸，確保閥桿零泄漏。同時保證足夠的強度和韌性，可以開關上萬次。使用壽命更長，操作輕松便捷。蒸汽截止閥的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運動，也叫截門，是使用頻繁的一種閥門，由于開閉過程中密封面之間摩擦力小，比較耐用，開啟高度不大，制造容易，維修方便，不僅適用于中低壓，而且適用于高壓。

At high temperatures, the valve stem does not come into contact with the medium, ensuring zero leakage of the valve stem. Simultaneously ensuring sufficient strength and toughness, it can be switched tens of thousands of times. Longer service life, easy and convenient operation. The opening and closing component of a steam shut-off valve is a plug shaped valve disc with a flat or conical sealing surface. The valve disc moves in a straight line along the centerline of the fluid, also known as a shut-off valve. It is a frequently used type of valve. Due to the low friction between the sealing surfaces during the opening and closing process, it is relatively durable, the opening height is not large, easy to manufacture, and convenient to maintain. It is not only suitable for medium and low pressure, but also for high pressure.

閥門作為壓力管道元件，控制管道流體的接通與截斷，它好比汽車上的剎車片，一但損壞，后果不堪設想。所以閥門的使用性能和使用壽命直接影響到管道系統的正常運行。閥門一旦損壞，系統就必須停機檢修，其中帶來的損失不是幾臺閥門的成本。

As a pressure pipeline component, valves control the connection and disconnection of pipeline fluids. They are like brake pads on a car. Once damaged, the consequences can be unimaginable. So the performance and service life of valves directly affect the normal operation of pipeline systems. Once the valve is damaged, the system must be shut down for maintenance, and the losses incurred are not the cost of just a few valves.

波紋管截止閥在這兩方面表現尤為突出，它具有雙重密封保證零外漏，更是達到氦質譜檢測零泄漏標準，非常安全可靠。波紋管循環次數可以達到一萬次循環以上不破壞，遠遠超過普通截止閥填料密封的開關壽命數次。另外，波紋管閥門可以阻止外界粉塵進入閥體內，保證介質的清潔度，比如在高純度硅粉、純氧、食品、真空等工況下，波紋管截止閥性能表現非常突出。

The bellows globe valve performs particularly well in these two aspects, with dual sealing to ensure zero leakage and meeting the zero leakage standard for helium mass spectrometry detection, making it very safe and reliable. The number of cycles of the bellows can reach more than 10000 without damage, far exceeding the switch life of ordinary globe valve packing seals by several times. In addition, bellows valves can prevent external dust from entering the valve body, ensuring the cleanliness of the medium. For example, in high-purity silicon powder, pure oxygen, food, vacuum and other working conditions, the performance of bellows globe valves is very outstanding.

波紋管截止閥的優點：1、產品結構合理、密封可靠、性能優良、造型美觀；2、密封面堆焊Co基硬質合金、耐磨、耐腐、抗摩擦性能好、使用壽命長；3、閥桿調質及表面氮化處理，有良好的抗腐和抗摩擦性能；4、雙重密封，性能更可靠，零泄漏；5、閥桿升降位置指示，更直觀；6、零件材質，法蘭和對焊編號尺寸可根據實際工況或用戶要求合理選配，滿足各種工程需要。

Advantages of bellows globe valve: 1. Reasonable product structure, reliable sealing, excellent performance, and beautiful appearance; 2. The sealing surface is welded with Co based hard alloy, which has good wear resistance, corrosion resistance, friction resistance, and long service life; 3. The valve stem undergoes quenching and surface nitriding treatment, exhibiting excellent corrosion resistance and friction resistance; 4. Double sealing, more reliable performance, zero leakage; 5. Valve stem lifting position indication, more intuitive; 6. The material of the parts, flange and welding number dimensions can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.