用途A48Y型弹簧式蒸汽安全阀阀适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上。A44Y型弹簧全启式安全阀适用于工作温度≤300℃的空气、石油等介质的设备和管路上，作为超压保护装置。产品连接法兰标准PN<6.4MPa按JB/和T-94系列1.2标准。PN≥6.4MPa按JB/和T-94系列2标准A48Y型弹簧式蒸汽安全阀主要零部件材料NO零件名称NameofpartA48Y-CA44Y-CA42Y-C材料MaterialsA44Y-PA42Y-P材料MaterialsA44Y-RA42Y-R材料Materials1阀体BodyWCBZG1Cr18Ni9TiCF8M2阀座Nozzle2Cr131Cr18Ni9Ti3163调节圈AdjustingringZG2Cr13ZG1Cr18Ni9Ti0Cr18Ni12Mo2Ti4反冲盘DischolderZG2Cr13ZG1Cr18Ni9Ti3165阀瓣Disc2Cr131Cr18Ni9Ti3166导向套Guidesleeve2Cr131Cr18Ni9Ti0Cr18Ni12Mo2Ti7阀盖BonnetZG230-450ZG230-450ZG230-4508弹簧Spring50CrVA50CrVA包覆氟塑料CoatedTeflon50CrVA包覆氟塑料CoatedTeflon9阀杆Stem2Cr131Cr18Ni9Ti1Cr18Ni12Mo2Ti10扳手LeverZG200-400ZG200-400ZG200-40011调整螺杆Adjustingbolt452Cr132Cr1312保护CapZG200-400ZG200-400316密封面材料Sealingsurfaceofmaterial堆焊Co基硬质合金DepositingstelliteA48Y型弹簧式蒸汽安全阀外形及连接尺寸公称通径NominaldiameterDN(mm)尺寸Dimensi***(mm)DOLL1DN’251511010532322013011040402513512050503216013065805017516010010065220200125150100285260200公称压力NominalpressurePN(MPa)公称通知NominaldiameterDN(mm)尺寸Dimensi***(mm)LL1DODN’(A44Y)1.62.54.025110951532321151002040401201102550501351203265651601354080801701355010010019517565125150255230100175(A44Y)6.410.0251101051532321301102040401351202550501601303265801751605010010022020065125150285260100200)