| 标准 | 国标 |
| 材质 | 不锈钢 |
| 公称通径 | 50 |
| 规格 | DN15-DN400 |
| 结构形式 | 弹簧式 |
| 连接形式 | 法兰 |
| 流动方向 | 双向 |
| 适用介质 | 蒸汽 |
| 形态 | 角式 |
| 零部件及配件 | 阀体 |
| 压力环境 | 常压 |
| 阀瓣开启高度 | 全启式安全阀 |
| 类型(通道位置) | 先导式 |
| 阀体构造 | 封闭式 |
| 品牌 | 自主品牌 |
| 型号 | A48 |
| 加工定制 | 是 |
安全阀整定压力分级
公称压力（MPA) 整定压力分级
1.6： 0.06-0.1 0.1-0.16 0.16-0.25 0.25-0.4 0.4-0.6 0.6-0.8 0.8-1.0 1.0-1.3 1.3-1.6
2.5： 〉1.3-1.6 〉1.6-2.0 〉2.0-2.5
4.0： 〉1.3-1.6 〉1.6-2.0 〉2.0-2.5 〉2.5-3.2 〉3.2-4.0
6.4： 〉2.5-3.2 〉3.2-4.0 〉4.0-5.0 〉5.0-6.4
10.0： 〉4.0-5.0 〉5.0-6.4 〉6.4-8.0 〉8.0-10.0
16.0 〉10-13 〉13-16
32.0 〉16-19 〉19-22 〉22-25 〉25-29 〉29-32
开启压力按要求设定
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  | | SKU:带扳手弹簧全启式安全阀(A48Y) | Description:
| 系列Series | | A48Y-16C A48Y-25 A48Y-40 A48Y-64 A48Y-100 A44Y-16C A44Y-25 A44Y-40 A44Y-64 A44Y-100 A44Y-16P A44Y-25P A44Y-40P A44Y-64P A44Y-100P A44Y-16R A44Y-25R A44Y-40R A44Y-64R A44Y-100R | | A48Y型适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上。A44Y适用于工作温度≤300℃的空气、石油等介质的设备或管路上，作为超压保护装置。连接法兰标准PN<6.4MPa按JB/T-94系例1。PN≥6.4MPa按JB/T-94系列2标准。 | | A48Y type are usedfor the equipment and pipeline of the with steam and air etc medium what the working temperature are less than 350 . A44Y type are used for the equi-pment and pipeline of the with air and petroleum gas medium what the working temperature are less than 300 , Take for extra pre-ssure protection devices. Flange connecting dimensions of comply with Standard series first of JB/T-94 when the pressure less than 6.4MPa, comply with Standard series two of JB/T-94 when more than 6.4MPa. | | 主要零部件材料Materials for main parts | | NO. | Name of part | A48Y-C A44Y-C 材料Materials | A44Y-P 材料Materials | A44Y-R材料Materials | | 1 | 阀 体Body | WCB | ZG1Cr18Ni9Ti | CF8M | | 2 | 阀 座Nozzle | 2Cr13 | 1Cr18Ni9Ti | 316 | | 3 | 调 节 圈Adjusting ring | ZG2Cr13 | ZG1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | | 4 | 反 冲 盘Disc holder | ZG2Cr13 | ZG1Cr18Ni9Ti | 316 | | 5 | 阀 瓣Disc | 2Cr13 | 1Cr18Ni9Ti | 316 | | 6 | 导 向 套Guide sleeve | 2Cr13 | 1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | | 7 | 阀 盖Bonnet | ZG230-450 | ZG230-450 | ZG230-450 | | 8 | 弹 簧Spring | 50CrVA | 50CrVA包覆氟塑料Coated Teflon | 50CrVA包覆氟塑料Coated Teflon | | 9 | 阀 杆Stem | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 10 | 扳 手Lever | ZG200-400 | ZG200-400 | ZG200-400 | | 11 | 调整螺杆Adjusting bolt | 45 | 2Cr13 | 2Cr13 | | 12 | 保 护 罩Cap | ZG200-400 | ZG200-400 | 316 | | | 密封面材料Sealing surface of material | 堆焊Co基硬质合金Depositing stellite |
| 外形尺寸和连接尺寸Dimensions (mm) | | | | Type | (DN) | do | D | K | g | g1 | b | f | f1 | Z- d | DN' | D1 | k1 | g3 | g2 | b1 | f' | f1' | Z1- d1 | L | L1 | H | | A48Y-16C A44Y-16C A44Y-16P A44Y-16R | 20 | 15 | 105 | 75 | | 55 | 16 | 2 | | 4-14 | 25 | 115 | 85 | | 65 | 16 | 2 | | 4-14 | 110 | 95 | 411 | | 25 | 16 | 115 | 85 | | 65 | 16 | 2 | | 4-14 | 32 | 140 | 100 | | 78 | 18 | 2 | | 4-18 | 110 | 95 | 411 | | 32 | 20 | 140 | 100 | | 78 | 18 | 2 | | 4-18 | 40 | 150 | 110 | | 85 | 18 | 3 | | 4-18 | 115 | 100 | 411 | | 40 | 25 | 150 | 110 | | 85 | 18 | 3 | | 4-18 | 50 | 165 | 125 | | 100 | 20 | 3 | | 4-18 | 120 | 110 | 472 | | 50 | 32 | 165 | 125 | | 100 | 20 | 3 | | 4-18 | 65 | 185 | 145 | | 120 | 20 | 3 | | 4-18 | 135 | 120 | 532 | | 65 | 40 | 185 | 145 | | 120 | 20 | 3 | | 4-18 | 80 | 200 | 160 | | 135 | 20 | 3 | | 8-18 | 160 | 140 | 556 | | 80 | 50 | 200 | 160 | | 135 | 20 | 3 | | 8-18 | 100 | 220 | 180 | | 155 | 22 | 3 | | 8-18 | 170 | 135 | 561 | | 100 | 65 | 220 | 180 | | 155 | 20 | 3 | | 8-18 | 125 | 250 | 210 | | 185 | 22 | 3 | | 8-18 | 195 | 175 | 667 | | 125 | 80 | 250 | 210 | | 185 | 22 | 3 | | 8-18 | 150 | 285 | 240 | | 210 | 24 | 3 | | 8-23 | 210 | 190 | 857 | | 150 | 100 | 285 | 240 | | 210 | 24 | 3 | | 8-23 | 175 | 310 | 270 | | 240 | 26 | 3 | | 8-23 | 255 | 230 | 915 | | 200 | 125 | 340 | 295 | | 265 | 26 | 3 | | 12-23 | 250 | 405 | 355 | | 320 | 30 | 3 | | 12-26 | 300 | 260 | 1,073 | | 250 | 150 | 405 | 355 | | 320 | 30 | 3 | | 12-26 | 300 | 460 | 410 | | 375 | 30 | 4 | | 12-26 | 350 | 320 | 1,307 | | 300 | 220 | 460 | 410 | | 375 | 30 | 4 | | 12-26 | 400 | 580 | 525 | | 485 | 36 | 4 | | 16-30 | 370 | 350 | 1,233 | | 350 | 250 | 520 | 470 | | 435 | 34 | 4 | | 16-26 | 500 | 715 | 650 | | 608 | 44 | 4 | | 20-34 | 500 | 450 | 1,711 | | 400 | 280 | 580 | 525 | | 485 | 36 | 4 | | 16-30 | 500 | 715 | 650 | | 608 | 44 | 4 | | 20-34 | 500 | 450 | 1,780
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