一、产品概述截止阀的启闭件是圆柱形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。国标截止阀只适用于全开和全关，一般不用来调节流量，定做时允许作调节和节流。二、产品特点直流式保温截止阀的保温夹套焊装于阀门的两法兰之间，阀门的侧面、底部设置有保温夹套的两个连接口。直流保温截止阀特别适用于化工、化肥行业的管路上，夹套内涵入蒸汽能防止介质结晶。广泛应用于石油、化工、冶金、制药等各类系统中，以输送常温下会凝固的高粘度介质。三、保温截止阀执行标准设计制造按GB12234-89GB12234-89；结构长度按GB12221-89GB12221-89；法兰尺寸按JB/T79-94JB/779-94；阀门检查和试验按GB13927。四、保温截止阀性能规范型号Type公称压力PN(MPa)试验压力PS(MPa工作温度(℃)适用介质工作蒸汽压力壳体密封BJ45(H.W.Y)-25P2.53.752.75≤200尿素、硝酸类≤1.3BJ45(H.W.Y)-40P4.06.04.4BJ45(H.W.Y)-64P6.49.06.6尿素、醋酸类BJ45(H.W.Y)-25R2.53.752.75BJ45(H.W.Y)-40R4.06.04.4BJ45(H.W.Y)-64R6.49.06.6五、保温截止阀主要零部件材料零件名称LTEMZG1CR18NI9TI系列ZGOOCR18NI10系列ZG1Cr18Ni12MO2Ti系列ZGOOCR17NI14MO2系列WCB系列阀体/阀盖世BODY/CAPZG1CR18NI9TIZGOOCR18NI10ZG1Cr18Ni12MO2TiZGOOCR17NI14MO2WCB闸板WEDGEZG1CR18NI9TIZGOOCR18NI10ZG1Cr18Ni12MO2TiZGOOCR17NI14MO21Cr13阀杆STEM1CR18NI9TI00cr18ni101CR18NI12MOTIOOCR17NI14MO1Cr13填料PACKINGPTFE纺织PTFE纺织PTFE纺织PTFE纺织石墨GRAPHITE垫片GASKET304L+PTFE304L+PTFE316L+PTFE316L+PTFE石墨+304GRAPHITE+304压盖GLANDFLANGEZG1CR18NI9TIZG00CR18ni10ZG1Cr18Ni12MO2TiZGOOCR17NI14MO2WCB填料压环STUFFINGRING1CR18NI9TI00CR18NI101Cr18NI12MOTIOOCR17NI14MO1Cr13螺栓BOLT1cr17ni21CR17NI21Cr17NI21Cr17Ni235CrMoA螺母NUT1cr18ni9ti1CR18NI9TI1Cr18NI9ti1Cr18NI9ti45六、保温截止阀主要外形尺寸及重量PN(MPa)DN(mm)尺寸(mm)重量LL1H3-GDD1D2bZ-φdDokg2.515200502101-21057555164--φ141201420220502401-21158565164--φ141401825220502501-213510078184--φ181602532250552701-214511085184--φ181603040270603101-2160125100204--φ181603650300603303-4180145120228-φ182404065350653603-4195160135228-φ182405480380704003-4230190160248-φ2328070100430754801270220188288-φ25320100125490805501300250218308-φ253601301505709062013302802483212-φ253601702006909575013953403023612-φ254002504.015200502101-21057555164--φ141201420220502401-21158565164--φ141401825220502501-213510078184--φ181602532250552701-214511085184--φ181603340270603101-2160125100204--φ181604150300603303-4180145120228-φ182404565350653603-4192160135228-φ182406280380704003-4230190,160248-φ2328080100430754801270220188288-φ25320100125