进口低温阀门是指采用不锈钢材质，经过低温深冷处理，带加长杆，适用于适用于介质温度-40℃～ -196℃的阀门。低温阀门包括低温球阀、低温闸阀、低温截止阀、低温安全阀、低温止回阀，低温蝶阀，低温针阀，低温节流阀，低温减压阀等，主要用于乙烯，液化天然气装置，天然气LPG LNG储罐，接受基地及卫星站，空分设备，石油化工尾气分离设备，液氧、液氮、液氩、二氧化碳低温贮槽及槽车、变压吸附制氧等装置上。输出的液态低温介质如乙烯、液氧、液氢、液化天然气、液化石油产品等，不但易燃易爆，而且在升温时要气化，气化时，体积膨胀数百倍。

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