在高温情况下，阀杆不与介质接触，确保阀杆零泄漏。同时保证足够的强度和韧性，可以开关上万次。使用寿命更长，操作轻松便捷。蒸汽截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动，也叫截门，是使用频繁的一种阀门，由于开闭过程中密封面之间摩擦力小，比较耐用，开启高度不大，制造容易，维修方便，不仅适用于中低压，而且适用于高压。

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.

阀门作为压力管道元件，控制管道流体的接通与截断，它好比汽车上的刹车片，一但损坏，后果不堪设想。所以阀门的使用性能和使用寿命直接影响到管道系统的正常运行。阀门一旦损坏，系统就必须停机检修，其中带来的损失不是几台阀门的成本。

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.

波纹管截止阀在这两方面表现尤为突出，它具有双重密封保证零外漏，更是达到氦质谱检测零泄漏标准，非常安全可靠。波纹管循环次数可以达到一万次循环以上不破坏，远远超过普通截止阀填料密封的开关寿命数次。另外，波纹管阀门可以阻止外界粉尘进入阀体内，保证介质的清洁度，比如在高纯度硅粉、纯氧、食品、真空等工况下，波纹管截止阀性能表现非常突出。

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.

波纹管截止阀的优点：1、产品结构合理、密封可靠、性能优良、造型美观；2、密封面堆焊Co基硬质合金、耐磨、耐腐、抗摩擦性能好、使用寿命长；3、阀杆调质及表面氮化处理，有良好的抗腐和抗摩擦性能；4、双重密封，性能更可靠，零泄漏；5、阀杆升降位置指示，更直观；6、零件材质，法兰和对焊编号尺寸可根据实际工况或用户要求合理选配，满足各种工程需要。

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.