A21F、A21H-C型适用于工作温度≤200℃的空气、氨、***……等介质的设备或管路上。A21W-P、R型适用于温度≤200℃有腐蚀性的气体或液体的设备或管路上，作为超压保护装置。KA21Y型适用于温度≤100℃的液化***等。主要零部件材料NO.零件名称A21H-C/A21F材料A21W-P/A21F-P材料A21Y-R材料1管接头201Cr18Ni9Ti1Cr18Ni12Mo2Ti2管接头螺母352Cr131Cr18Ni9Ti3阀座351Cr18Ni9Ti1Cr18Ni12Mo2Ti4阀体2Cr131Cr18Ni9Ti1Cr18Ni12Mo2Ti5阀瓣2Cr13/2Cr13+PTFE1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE1Cr18Ni12Mo2Ti6弹簧座2Cr131Cr18Ni9Ti1Cr18Ni12Mo2Ti7弹簧50CrVA50CrVA包覆氟塑料50CrVA包覆氟塑料8锁紧螺母Q235-AZG230-4501Cr18Ni9Ti9弹簧导向垫2Cr131Cr18Ni9Ti1Cr18Ni12Mo2Ti10调节螺母Q235-A2Cr131Cr18Ni12Mo2Ti密封面材料"Y"型堆焊Co基硬质合金,"H"型堆焊D507,"W"型为阀门本体外形尺寸和连接尺寸型号公称通径dodDoMd1D1LL1≈HKA21-16CA21H-16CA21H-40A21W-16PA21W-40PKA21-16P15121520M27×1.5G1/2"3035766620162025M33×1.5G3/4"3540876825182531M39×1.5G1"4050100105A21Y-64A21Y-64PA21Y-100A21Y-100P15101525M39×1.5G1"44501006620102031M39×1.5G1"44501006825122531M39×1.5G1"4450100105A21W-160/160P15820/M24×2G1"445010026120825/M33×2G1"445010026125828/M36×2G1"4450100285)