djq系列型低温紧急切断阀djq electro emergency cut-off valveatlowtemperature
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 lowtemperaturestoragetank 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 lowtemperature liquidmedium,has small volume, light weight, reliable sealing, reliable emergency stop quickly and anti-static characteristics.
主要技术参数
main technicalparameters
公称压力/nominal
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
方向密封试验压力/direction of seal test
气缸气源压力/air pressure
紧急切断温度/emergency cut-off temperature:+70℃
紧急切断时间/emergency cut-off time:
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
型号/model 主要外形和连接尺寸 main formandtheconnection size (mm) 重量 weight
h h1 d0 d1 d b w1 w2 m （kg）
djq-20p 189 478 ф20 ф25.5 ф100 8 80 ф130 rc¼ 7.2
djq-25p 240 530 ф25 ф32.5 ф100 8 90 ф130 rc¼ 7.7
djq-32p 250 489 ф32 ф38.5 ф100 8 105 ф130 rc¼ 7.3
djq-40p 227 567 ф40 ф45.5 ф125 8 120 ф160 rc¼ 13.2
djq-50p 230 570 ф50 ф57.5 ф125 10 140 ф160 rc¼ 14.5

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