产品概述低温闸阀适用于甲烷、液态天然气、已烯、二氧化碳、液氨、液氧、液氮、液氢等低温介质。特点1、为防止中腔异常升压，在闸板的进口侧设置了泄压孔2、根据阀门的工作温度确定阀盖的顶部长度，确保阀桿填料的可靠密封3、根据工作温度合理选用填料，垫片等零件的材料4、严格控制材料的化学成份及低温冲击韧性等力学性能指标5、采用多种配管法兰标准及密封面型式，适用于各种工程需要执行标准：压力试验：设计与制造结构长度法兰尺寸压力-温度试验-检验JB/T7749GB12221JB79Gb9131JB/T9092公称压力PN1.62.54.06.410.0强度试验2.43.86.09.615.0水密封试验1.82.84.47.011.0上密封试验1.82.84.47.011.0气密封试验0.4-0.7主要零件材料及性能：体盖板阀杆密封面垫片填料工作温度适用介质ZGoCrMNVAI低温高压铸钢1Cr7Ni12STL/STL1Cr13/柔性石墨低温石棉PTFE浸聚四氟乙烯石棉绳柔性石墨-46丙烷/炳烯甲醇/乙烷煤气/液氨LCBZGoCrMNVAI低温高压铸钢-60LC1ZGoCrMNVAI低温高压铸钢-73LC2ZGoCrMNVAI低温高压铸钢1Cr18Ni9Ti-101LC3ZGoCrMNVAI低温高压铸钢-115LC4ZGoCrMNVAI低温高压铸钢-196国标低温法兰闸阀规格主要尺寸(PN1.6MPa-2.5MPa)：国标低温法兰闸阀规格主要尺寸PN4.0MPa-10.0MPa:1.6MPaDNLDD1D2bn-ΦdHD0凸面法法RFDZ40Y-16LCBDZ40Y-16LC1DZ40Y-16LC2DZ40Y-16LC3DZ40Y-16LC4DZ40Y-16PDZ40Y-16R201501057555144-Φ14320140251601158565144-Φ143501603218013510078164-Φ183851804020014511085164-Φ1842022050250160125100164-Φ1854024065265180145120184-Φ1861024080280195160135208-Φ18690280100300215180155208-Φ18780300125325245210185228-Φ18930320150350280240210248-Φ239803502004003352952652612-Φ2611804002504501053553203012-Φ3013904503005004604103753012-Φ3016205003505505204704353416-Φ3418105004006005805254853616-Φ3619705502.5MPa201501057555164-Φ16320140凸面法法RFDZ40Y-25LCBDZ40Y-25LC1DZ40Y-25LC2DZ40Y-25LC3DZ40Y-25LC4DZ40Y-25PDZ40Y-25R251601158565164-Φ163501603218013510078184-Φ183851804020014511085184-Φ1842020050250160125100204-Φ2054024065265180145125228-Φ2251024080280195160135228-Φ22690280100300230190160248-Φ24780300125325270220188288-Φ28930300150350300250218308-Φ309803202004003603102783412-Φ3411803602504504253703323612-Φ3613904003005004854303904016-Φ4016204503505505504904484416-Φ4418105004006006105505054816-Φ4819905604.0MPaDNLDD1D2D6bn-ΦdHD0凹面法法MFMDZ40Y-40LCBDZ40Y-40LC1DZ40Y-40LC2DZ40Y-40LC3DZ40Y-40LC4DZ40Y-40PDZ40Y-40R20150105755551164-Φ1433014025160115856558164-Φ14360160321801351007866184-Φ18440180402001451108576184-Φ184552005025016012510088204-Φ1857524065380180145120110224-Φ20635240803103195160135121228-Φ2271528010050230190160150248-Φ22815300125400270220188176288-Φ24965360150450300250218204308-Φ281025400200550375320282160388-Φ3012254502506504453853453134212-Φ3414405603007505104504083644616-Φ34166554703508505705104654225216-Φ41<)