DA21F-40T低温安全阀此类型专用安全阀主要用于液氧（液氮、液***）等低温液态介质系统上，具有启动自如、密封可靠、起跳压力稳定等特点。公称通径：DN6mm公称压力：PN4.0MPa适用介质：LO2、LN2、LAR、LNG等适用温度：-196℃-+80℃阀体、阀座：铜阀顶、阀杆、弹簧：不锈钢产品型号产品代号公称通径(mm)公称压力(MPa)整定压力(MPa)密封压力(MPa)重量KgDA21F-40T301DK61/44.000.22-3.850.18-3.150.22DA21F-40T301DK93/84.000.22-3.850.18-3.150.35DA21F-40T301DK131/24.000.22-3.850.18-3.150.42DA21F-40T301DK193/44.000.22-3.850.18-3.150.59DA21F-40T301DK2514.000.22-3.850.18-3.150.8)