A42Y弹簧高压安全阀 A42Y弹簧高压安全阀适用于工作温度≤300℃的空气石油气等介质的设备和管路上；A42Y-64P，A42Y-100P型适用于工作温度≤200℃有腐蚀性气体介质的设备和管路上；当设备和管路内压力超过允许值时，阀门自动开启，继而全量排放；当压力降低到规定值时，阀门自动关闭，保证设备和管路的安全运行。 连接法兰按JB/T2769-92的标准。
弹簧高压安全阀主要零部件材料
| NO. | 零件名称 | A42Y-160 A42Y-320 材料 | A42Y-160P A42Y-320P 材料 | A42Y-160R A42Y-320R 材料 | | 1 | 法兰 | 35/35CrMoA | 2Cr13 | 1Cr18Ni12Mo2Ti | | 2 | 阀座 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 3 | 阀体 | 40 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 4 | 调节圈 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 5 | 阀瓣 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 6 | 反冲盘 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 7 | 导向套 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 8 | 阀盖 | ZG230-450 | ZG230-450 | ZG230-450 | | 9 | 阀杆 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti | | 10 | 弹簧 | 50CrVA | 50CrVA包覆氟塑料 | 50CrVA包覆氟塑料 | | 11 | 调整螺杆 | 45 | 2Cr13 | 2Cr13 | | 12 | 阀帽 | ZG200-400 | ZG200-400 | ZG200-400 | | | 密封面材料 | 堆焊Co基硬质合金 | ■弹簧高压安全阀外形尺寸和连接尺寸
| 型号 | 公称通径 | do | d | M | K | D | Z-?d | b | d1 | M1 | K1 | D1 | Z1-?d1 | b1 | L | L1 | ≈H | | A42Y-160 | 15 | 8 | 20 | M34×2 | 60 | 95 | 3-18 | 20 | 29 | M42×2 | 80 | 115 | 4-18 | 22 | 95 | 100 | 220 | | 20 | 8 | 27 | M33×2 | 68 | 105 | 3-18 | 20 | 29 | M42×2 | 80 | 115 | 4-18 | 22 | 95 | 100 | 220 | | 25 | 14 | 28 | M33×2 | 68 | 105 | 3-18 | 20 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 150 | 150 | 280 | | 32 | 15 | 37 | M42×2 | 80 | 115 | 4-18 | 22 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 150 | 150 | 390 | | 40 | 20 | 47 | M52×2 | 115 | 165 | 6-26 | 28 | 65 | M80×3 | 145 | 200 | 6-29 | 40 | 180 | 180 | 495 | | 50 | 25 | 59 | M64×3 | 115 | 165 | 6-26 | 32 | 80 | M100×3 | 170 | 225 | 6-33 | 50 | 165 | 165 | 400 | | A42Y-320 | 15 | 8 | 27 | M33×2 | 68 | 105 | 3-18 | 20 | 29 | M42×2 | 80 | 115 | 4-18 | 22 | 95 | 100 | 220 | | 20 | 8 | 30 | M33×2 | 75 | 110 | 3-18 | 22 | 29 | M42×2 | 80 | 115 | 4-18 | 22 | 95 | 100 | 220 | | 25 | 14 | 35 | M42×2 | 80 | 115 | 4-18 | 22 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 150 | 150 | 280 | | 32 | 15 | 41 | M48×2 | 95 | 135 | 4-22 | 25 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 150 | 150 | 390 | | 40 | 20 | 58 | M64×3 | 115 | 165 | 6-26 | 32 | 65 | M80×3 | 145 | 200 | 6-29 | 40 | 180 | 180 | 495 | | 50 | 25 | 70 | M80×3 | 145 | 200 | 6-29 | 40 | 80 | M100×3 | 170 | 225 | 6-33 | 50 | 165 | 165 | 400 | | A42Y-400 | 32 | 15 | 41 | M48×2 | 95 | 135 | 4-22 | 25 | 50 | M64×3 | 115 | 165 | 6-26 | 32 | 150 | 150 | 397 | 尼威安全阀相关产品: | A46F先导式安全阀 | A28H带手柄/弹簧全启式外螺纹安全阀 | A27H/带手柄弹簧微启式外螺纹安全阀 | | NA42H、NA802Y型安全溢流阀 | A38Y/A37Y/A43Y弹簧双联式安全阀 | NWA72W真空负压安全阀 | | GA41H、A51H型单杠杆安全阀 | GA44H双杠杆安全阀 | A48Y弹簧全启式安全阀 | | A21F、A21H弹簧微启式外螺纹安全阀 | A42Y弹簧高压安全阀 | A41Y弹簧微启封闭式高压安全阀 | | A42Y弹簧全启封闭式安全阀 | A40Y带散热器高温高压安全阀 | AHN42F平行式安全回流阀 | | AH42F、A42F液化气安全阀，安全回流阀 | A48SB高温高压带散热器安全阀 | A47H弹簧微启式安全阀，蒸汽安全阀 | | A41H弹簧微启封闭式安全阀 | A61H弹簧微启式高压安全阀 | AQ空压机安全阀 | | 
