此類(lèi)型專(zhuān)用低溫緊急切斷閥適用于低溫貯槽上切斷流通介質(zhì)，特別是在出現火情故障時(shí)能及時(shí)切斷介質(zhì)。廣泛用于LNG、液態(tài)乙烯及其它低溫介質(zhì)，具有體積小、重量輕、密封可靠、緊急切斷迅速可靠和防靜電的特點(diǎn)。

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.

▋低溫緊急切斷閥主要技術(shù)參數：

公稱(chēng)壓力/Nominal pressure：4.0MPa

設計溫度/Design temperature：-196℃～+70℃

適用介質(zhì)/Applicable medium：LNG 、LO2、LN2、LAr

連接方式/Connection method：插焊

公稱(chēng)通徑/Nominal diameter：25mm~50mm

強度試驗壓力/Strength test pressure：4.0MPa

氣密性試驗壓力/Air tightness test pressure：1.6MPa

方向密封試驗壓力/direction of seal test pressure：0.4MPa

氣缸氣源壓力/Air pressure cylinder：0.4～0.6MPa

緊急切斷溫度/Emergency cut-off temperature：+70℃

緊急切斷時(shí)間/Emergency cut-off time：<2秒

▋主要零部件材料:

閥體、閥蓋: CF8

閥瓣、閥桿: S30408

閥瓣密封件：PCTFE