NO. 零件名称 Name of part HFA72W-P 材料 Materials HFA72W-R 材料 Materials 1 阀体 Body ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti 2 阀座 Nozzle 1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti 3 调节阀 Adjusting ring 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 4 阀盖 Bonnet ZG1Cr18Ni9Ti 1Cr18Ni9Ti 5 阀杆 Stem 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 6 弹簧 Spring 50CrVA 50CrVA 包覆氟塑料 Coated Teflon