A42Y-25C DN250 DN300气体安全阀

A42Y-25C DN250 DN300气体安全阀用途　
A42Y-25C DN250 DN300气体安全阀适用于工作温度≤300℃的空气、石油气、液体等介质的设备和管路上。A42-P型及A42Y-R型弹簧全启式安全阀适于工作温度≤200℃有腐蚀性的介质的设备和管路上。A48Y型弹簧全启式安全阀适于工作温度≤350℃的蒸气、空气等介质设备和管路上，作为**压保护装置。
A42Y-25C DN250 DN300气体安全阀主要零部件材料
NO.	零件名称 
Name of part	A42Y-C A48Y-C KA42Y-C
材料　Materials	A42Y-P/K A42Y-P
材料　Materials	A42Y-R
材料　Materials	DA42Y-P
材料　Materials
1	阀座　Nozzle	2Cr13/1Cr18Ni9Ti	ZG1Cr18Ni9Ti	2G1Cr18Ni12Mo2Ti	ZG1Cr18Ni9Ti
2	阀体　Body	WCB	ZG1Cr18Ni9Ti	2G1Cr18Ni12Mo2Ti	LCB/ ZG1Cr18Ni9Ti
3	调节圈　Adjusting ring	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
4	反冲盘　Disc holder	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
5	阀瓣　Disc	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
6	导向套　Guide sleeve	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
7	阀盖　Bonnet	ZG230-450	ZG230-450	ZG230-450	ZG1Cr18Ni9Ti
8	弹簧Spring	50CrVA	50CrVA包覆氟塑料　Coated Teflon	50CrVA包覆氟塑料　Coated Teflon	50CrVA
9	阀杆Stem	2Cr13	1Cr18Ni9Ti/1Cr18Ni12Mo2Ti	1Cr18Ni9Ti/1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
10	调整螺杆Adjusting bolt	45	2Cr13	2Cr13	2Cr13
11	阀帽Cap	ZG200-400	ZG200-400	ZG200-400	ZG230-450
 	密封面材料　Sealing surface of material	堆焊Co基硬质合金　Depositing stellite