DJQ系列型低温紧急切断阀
DJQ electro emergency cut-off valve at low temperature
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此类型专用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 ***all 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 |