气体减压阀结构特点和用处：气体减压阀属于先导活塞式减压阀。由主阀和导阀两部分组成。主阀主要由阀座、主阀盘、活塞、弹簧等零件组成。导阀主要由阀座、阀瓣、膜片、弹簧、调节弹簧等零件组成。通过调节调节弹簧压力设定出口压力、利用膜片传感出口压力变化，通过导阀启闭驱动活塞调节主阀节流部位过流面积的大小，实现减压稳压功能。　　气体减压阀主要用于气体管路，如空气减压阀、氮气减压阀、氧气减压阀、氢气减压阀、液化气减压阀、天然气减压阀等气体。气体减压阀主要技术参数和性能指标：公称压力(Mpa)1.62.54.06.410.016.0壳体试验压力(Mpa)*2.43.756.09.615.024密封试验压力(Mpa)1.62.54.06.410.016.0最高进口压力(Mpa)1.62.54.06.410.016.0出口压力范围(Mpa)0.1-1.00.1-1.60.1-2.50.5-3.50.5-3.50.5-4.5压力特性偏差(Mpa)△P2PGB12246-1989流量特性偏差(Mpa)P2GGB12246-1989最小压差(Mpa)0.150.150.20.40.81.0渗漏量X/F(聚四氟乙稀/橡胶)：O Y(硬密封)：GB12245-1989*：用于氧气介质时的材料气体减压阀流量系数(Cv)：DN1520253240506580100125150200250300350400500Cv12.546.591625366410014025040057078010201500气体减压阀外形尺寸(PN1.6-4.0)：　　　                                                                                             单位：mm   公称通径DN外 形 尺 寸LHHl6.4MPa10.0/16.0MPa151801803001002018020031010525200220311203222023031012040240240335135502703003351356530034034014080330360380170100380380185125450490215150500490225200550535260250650580310300800725355350850765395400900800435500950 855495  气体减压阀外形尺寸(PN6.4-16.0)：公称通径DN外 形 尺 寸LHHl1.6/2.5MPa4.0MPa15160180290902016018030098251802003001103220022030011040220240320125502502703201256528030032513080310330365160100350380365170125400450475200150450500475210200500550515240250650560290300800705335350850745375400900780405450900730455500950835465