低温紧急切断阀

此类型**低温紧急切断阀适用于低温贮槽上切断流通介质，特别是在出现火情故障时能及时切断介质。广泛用于LNG、液态乙烯及其它低温介质，具有体积小、重量轻、密封可靠、紧急切断迅速可靠和防静电的特点。

This type is special emergency cut-off valve is suitable for low temperature storage tank at low temperature on cut off circulation medium, especially in the event of a fire failure can promptly cut off the medium. Widely used in LNG, ethylene and other low temperature liquid medium, has small volume, light weight, reliable sealing, reliable emergency stop quickly and anti-static characteristics.

主要技术参数

Main technical parameters

公称压力/Nominal pressure:4.0MPa

设计温度/Design temperature:-196℃～+70℃

适用介质/Applicable medium:LNG 、LO2、LN2、LAr

连接方式/Connection method:插焊

公称通径/Nominal diameter:25mm~50mm

强度试验压力/Strength test pressure：4.0MPa

气密性试验压力/Air tightness test pressure:1.6MPa

方向密封试验压力/direction of seal test pressure:0.4MPa

气缸气源压力/Air pressure cylinder:0.4～0.6MPa

紧急切断温度/Emergency cut-off temperature:+70℃

紧急切断时间/Emergency cut-off time:<2秒

主要零部件名称
Main components name	材料
Materials
阀体/Valve body	ZG0Cr18Ni9
阀瓣/Valve disc	0Cr18Ni9Ti
阀盖/Valve cover	ZG0Cr18Ni9
阀杆/Valve stem	0Cr18Ni9
主密封件/Main seal	PTFE或PCTFE
气缸/cylinder	铸铝
支架/stents	铸铝