蒸汽减压阀铸钢蒸汽减压阀公称压力(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***高进口压力(Mpa)1.62.54.06.410.016.0出口压力范围(Mpa)0.04-1.00.05-1.60.08-2.50.2-3.50.5-3.50.5-4.5压力特性偏差(Mpa)△***GB12246-1989流量特性偏差(Mpa)P2GGB12246-1989***小压差(Mpa)0.070.10.150.40.50.8渗漏量GB12245-1989*：壳体试验不包括膜片、顶盖主要零件材料零件名称零件材料阀体阀盖底盖WCB阀座阀瓣2Cr13缸套活塞铝铁青铜膜片1Cr18Ni9活塞环合金铸铁/对位聚苯导阀座导阀杆2Cr13主阀弹簧50CrVA导阀主弹簧50CrVA调节弹簧60Si2Mn流量系数(Cv)DN506580100125150200250300350400500Cv12.546.5916253664100140250外形尺寸(PN1.6-4.0)单位：mm公称通径DN外形尺寸LHHl1.6/2.5MPa4.0MPa151601802658520160180265852518020028095322002202809540220240290105502502703001306528030031514580310330330170100350380405200125400450450225150450500485265)