设计规范：

设计制造：JB/T 11487-2013, API600

结构长度：GB/T 12221, ASME B16.10

连接尺寸：HG/T 20592, ASME B16.25

压力-温度： GB/T 9131 ASME B16.34 HG 20592

试验-检验： GB/T13927 GB/T 9092 API 598

氦质谱检漏：API 602 MSS SP-117

设计特点： 

1.        采用双层波纹管结构，阀门结构合理，更加紧凑；

2.        本公司设计制造的双波纹管闸阀安装高度较同类产品下降20%~30%；

3.        采用双层波纹管结构，阀门在开关过程中对波纹管的受力减小，

且受力更均匀，延长其使用寿命；

4.        采用双层波纹管，密封更加可靠。阀门经氦检漏，实现零泄漏，

特别使用于易燃、易爆、剧毒介质的管路，环保又安全；

5.     采用直通式结构，优化流道设计，介质过流阻力小，流量系数大，使用更节能；

6.     采用填料、双波纹管及阀杆等多层密封，使阀门达到真正的零泄漏

Application: For flammable and explosive working conditions, e.g. hot oil, hydrogen, etc.
Design features.
1. the use of double bellows structure, the valve structure is reasonable and more compact.
2. the installation height of the double bellow gate valve designed and manufactured by our

company is 20%~30% lower than that of similar products.
3. the use of double bellows structure, the valve in the process of opening and closing the

force on the bellows is reduced, and the force is more uniform, extending its service life.
4. the use of double-layer bellows, more reliable sealing. The valve is leak-tested by helium

to achieve zero leakage.Especially used in flammable, explosive, highly toxic media pipeline,

 environmental protection and safety.

5. adopt straight-through structure, optimize the flow channel design, the medium

overflow resistance is small, the flow coefficient is large, use more energy-saving.
6. the use of packing, double bellows and stem multi-layer seal, so that the valve to

achieve a true zero leakage