设计规范：

应用：适用于有毒有害高危介质工况，如干氯气，氨气等。

设计特点：

1：零泄漏密封：

主密封：波纹管组件密封，   采用内藏式免冲刷设计，通过液压成形，多层结构，可保证最大程度的寿命延长，在压力2.5MPa下伸缩（即开关）可达10000次。

辅助密封：非金属填料，使用带缓蚀剂的编织填料，更增加了可靠性、安全性以及耐高温性，提供一个无需维护的条件。

2： 内限位装置，增加阀杆的上限位，保护阀门的使用安全，有效的保护波纹管的弹性变量，大大提高使用寿命。

3：密封面由硬质合金堆焊而成，隔断性优异

4：波纹管选用特材哈氏合金HC.276

Application: Suitable for toxic and hazardous media conditions,

such as dry chlorine, ammonia, etc.
Design features：
1: Zero leakage seal.
Main seal: Bellows assembly seal, with built-in flush-free design,by hydraulic forming, multi-layer structure, can ensure maximum life extension, expansion and contraction (open/close) up to 10,000 times

at a pressure of 2.5 MPa.
Auxiliary seal: non-metallic packing, using braided packing with corrosion inhibitor, for added reliability, safety and resistance to high temperatures,

providing a maintenance-free condition.
2: Internal limiting device,Increase the upper limit of the valve stem toprotect the safety of the valve in use, effectively protecting the elastic variables

of the bellows and greatly increasing the service life.
3: Sealing surface made of carbide overlay welding, excellent isolation.
4: The bellows is made of special material Hastelloy HC.276.