| 
系列 Series | | A28H-10 A28Y-10P A28Y-10R8 A28Y-25R8 A28Y-40R8 A28H-16 A28Y-16P A28Y-16R8 A28Y-25R8 A28Y-40R8 | A28H型适用于工作温度≤200℃的空气、蒸汽、水、氮氢混合气等介质的设备或管路上，A28Y-P/10R8适用于工作温度≤200℃有腐蚀性介质的设备或管路上，作为超压保护装置。 | 主要零部件材料 Explanation of materials for main parts | | NO. | Name of part | A28H Materials | A28Y-P Materials | A28Y-R8 Materials | | 1 | Body | HT200 | ZG1Cr18Ni9Ti | CF8M | | 2 | Nozzle | 35 | ZG1Cr18Ni9Ti | CF8M | | 3 | Adjusting ring | 2Cr13 | 1Cr18Ni9Ti | 316 | | 4 | Disc | 2Cr13 | 1Cr18Ni9Ti | 316 | | 5 | Spring | 50CrVA | 50CrVA Coated Teflon | 50CrVA Coated Teflon | | 6 | Stem | 2Cr13 | 2Cr13 | 316 | | 7 | Adjusting bolt | 45 | 2Cr13 | 316 | | 8 | Cap | ZG200-400 | ZG200-400 | CF8M | | | Sealing surface of material | D507
Depositing D507 | Co
Depositing stellite | | 10 | Adjusting nut | Q235-A | 2Cr13 | 1Cr18Ni12Mo2Ti | | | Sealing surface of material | "Y" Co Depositing stellite, "H" D507 Depositing D507, "W" body | | 外形尺寸和连接尺寸 Dimensions (mm) | Nominal diameter
DN (mm) | Dimensions (mm) | | do | Rc | G | L | L1 | H | | 15 | 10 | 1/2" | 3/4" | 37 | 62 | 189 | | 20 | 12 | 3/4" | 1" | 40 | 65 | 196 | | 25 | 15 | 1" | 11/ "
4 | 45 | 72 | 277 | | 32 | 20 | 11/ " | 1 | 55 | 85 | 312 | | 40 | 25 | 11/ " | 2" | 67 | 100 | 322 | | 50 | 32 | 2" | 21/ "
2 | 76 | 112 | 348 | | 65 | 40 | 21/ " | 3" | 110 | 135 | 370 | | 80 | 50 | 3" | 4" | 110 | 145 | 410 | | |
