A48Y法兰蒸汽阀适于温度《350℃的蒸汽、空气等介质的设备和管 路上，作为超压保护装置，当设备和管路内压力超过允许值时，阀门自动开启，继而全量排放；当压力降低到规定值时，阀门自动关闭，保证设备和管路的运行。

主要零部件材料

NO.零件名称A48Y-C A44Y-C 材料A44Y-P材料A44Y-R材料1阀体WCBZG1Cr18Ni9TiCF8M2阀座2Cr131Cr18Ni9Ti3163调节圈ZG2Cr13ZG1Cr18Ni9Ti0Cr18Ni12Mo2Ti4反冲盘ZG2Cr13ZG1Cr18Ni9Ti3165阀瓣2Cr131Cr18Ni9Ti3166导向套2Cr131Cr18Ni9Ti0Cr18Ni12Mo2Ti7阀盖ZG230-450ZG230-450ZG230-4508弹簧50CrVA50CrVA包覆氟塑料50CrVA包覆氟塑料9阀杆2Cr131Cr18Ni9Ti1Cr18Ni12Mo2Ti10扳手ZG200-400ZG200-400ZG200-40011调整螺杆452Cr132Cr1312保护罩ZG200-400ZG200-400316

密封面材料堆焊Co基硬质合金

外形尺寸和连接尺寸

型号公称通径doDKgg1bff1Z-ødDN'D1K1g3g2b1f'f1'Z1-ød1LL1≈HA48Y-16C201510575

55162

4-142511585

65162

4-1411095411251611585

65162

4-1432140100

78182

4-18110954113220140100

78182

4-1840150110

85183

4-181151004114025150110

85183

4-1850165125

100203

4-181201104725032165125

100203

4-1865185145

120203

4-181351205326540185145

120203

4-1880200160

135203

8-181601405568050200160

135203

8-18100220180

155223

8-1817013556110065220180

155203

8-18125250210

185223

8-1819517566712580250210

185223

8-18150285240

210243

8-23210190857150100285240

210243

8-23175310270

240263

8-23255230915200125340295

26526