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spring微启封闭式泄压阀阀结构简述
1、spring微启封闭式泄压阀阀具有结构简单、密封性能好、开启压力准确、排放能力大、回座压差小、调整方便等特点。
2、喷嘴型valve seat:valve seat为位伐尔喷嘴型valve seat,蒸汽流经valve seat出口处时达到音速,排放系数大,valve seat密封面堆焊钴铬钨硬质合金,耐磨抗冲蚀,寿命长。
3、热弹性valve disc:valve disc设计为热弹性结构,利用其在介质压力下微小的变形,提高密封能力,克服泄压阀阀在介质压力下临近整定压力时的前泄现象。valve disc密封面采用先进的激光淬火技术,提高了硬度、耐磨性、抗冲抗性。
4、调节nut:通过调整调节nut,调整spring压缩量,使阀门能够很方便、很迅速地获得准确的整定压力。
5、背压调整套:调整valve disc背压的辅助机构,通过背压调整套调整,可获得合适的回座压差。上调时,使阀门背压降低。下调时,使阀门背压提高。
Product drawing

Product dimensions
| model | DN | d0 | D | K | g | g1 | b | f | f1 | Z-Фd | DN' | D1 | K1 | g2 | g' | b1 | f' | f1' | Z1-Фd1 | L | L1 | ≈H |
| A41H-16C A41Y-16P/R | 20 | 15 | 105 | 75 | 55 | 16 | 2 | 4-14 | 20 | 105 | 75 | 55 | 16 | 2 | 4-14 | 100 | 85 | 276 | ||||
| 25 | 20 | 115 | 85 | 65 | 16 | 2 | 4-14 | 25 | 115 | 85 | 65 | 16 | 2 | 4-14 | 100 | 85 | 276 | |||||
| 32 | 25 | 140 | 100 | 78 | 18 | 2 | 4-18 | 32 | 140 | 100 | 78 | 18 | 2 | 4-18 | 115 | 100 | 285 | |||||
| 40 | 32 | 150 | 110 | 85 | 18 | 3 | 4-18 | 40 | 150 | 110 | 85 | 18 | 3 | 4-18 | 120 | 110 | 292 | |||||
| 50 | 40 | 165 | 125 | 100 | 20 | 3 | 4-18 | 50 | 165 | 125 | 100 | 20 | 3 | 4-18 | 135 | 120 | 370 | |||||
| 65 | 50 | 185 | 145 | 120 | 20 | 3 | 4-18 | 65 | 185 | 145 | 120 | 20 | 3 | 4-18 | 140 | 130 | 375 | |||||
| 80 | 65 | 200 | 160 | 135 | 20 | 3 | 8-18 | 80 | 200 | 160 | 135 | 20 | 3 | 8-18 | 160 | 135 | 373 | |||||
| 100 | 80 | 220 | 180 | 155 | 22 | 3 | 8-18 | 100 | 220 | 180 | 155 | 22 | 3 | 8-18 | 170 | 160 | 513 | |||||
| 125 | 100 | 250 | 210 | 185 | 22 | 3 | 8-18 | 125 | 250 | 210 | 185 | 22 | 3 | 8-18 | 190 | 190 | 560 | |||||
| 150 | 125 | 285 | 240 | 210 | 24 | 3 | 8-23 | 150 | 285 | 240 | 210 | 24 | 3 | 8-23 | 205 | 195 | 570 | |||||
| 200 | 150 | 340 | 295 | 265 | 26 | 3 | 12-23 | 200 | 340 | 295 | 265 | 26 | 3 | 12-23 | 240 | 230 | 717 | |||||
| 250 | 200 | 405 | 355 | 320 | 30 | 3 | 12-26 | 250 | 405 | 355 | 320 | 30 | 3 | 12-26 | 350 | 320 | 940 | |||||
| 300 | 250 | 460 | 410 | 375 | 30 | 4 | 12-26 | 300 | 460 | 410 | 375 | 30 | 4 | 12-26 | 350 | 320 | 980 | |||||
| A41H-25C A41Y-25P/R | 20 | 15 | 105 | 75 | 55 | 16 | 2 | 4-14 | 20 | 105 | 75 | 55 | 16 | 2 | 4-14 | 100 | 85 | 276 | ||||
| 25 | 20 | 115 | 85 | 65 | 16 | 2 | 4-14 | 25 | 115 | 85 | 65 | 16 | 2 | 4-14 | 100 | 85 | 276 | |||||
| 32 | 25 | 140 | 100 | 78 | 18 | 2 | 4-18 | 32 | 140 | 100 | 78 | 18 | 2 | 4-18 | 115 | 100 | 285 | |||||
| 40 | 32 | 150 | 110 | 85 | 18 | 3 | 4-18 | 40 | 150 | 110 | 85 | 18 | 3 | 4-18 | 120 | 110 | 292 | |||||
| 50 | 40 | 165 | 125 | 100 | 20 | 3 | 4-18 | 50 | 165 | 125 | 100 | 20 | 3 | 4-18 | 135 | 120 | 370 | |||||
| 65 | 50 | 185 | 145 | 120 | 22 | 3 | 8-18 | 65 | 185 | 145 | 120 | 20 | 3 | 4-18 | 140 | 130 | 375 | |||||
| 80 | 65 | 200 | 160 | 135 | 24 | 3 | 8-18 | 80 | 200 | 160 | 135 | 20 | 3 | 8-18 | 160 | 135 | 373 | |||||
| 100 | 80 | 230 | 190 | 160 | 24 | 3 | 8-23 | 100 | 220 | 180 | 155 | 20 | 3 | 8-18 | 170 | 160 | 513 | |||||
| 125 | 100 | 270 | 220 | 188 | 28 | 3 | 8-26 | 125 | 250 | 210 | 185 | 22 | 3 | 8-18 | 190 | 190 | 560 | |||||
| 150 | 125 | 300 | 250 | 218 | 30 | 3 | 8-26 | 150 | 285 | 240 | 210 | 24 | 3 | 8-23 | 205 | 195 | 570 | |||||
| 200 | 150 | 360 | 310 | 278 | 34 | 3 | 12-26 | 200 | 340 | 295 | 265 | 26 | 3 | 12-23 | 240 | 230 | 717 | |||||
| 250 | 200 | 425 | 370 | 332 | 36 | 3 | 12-30 | 250 | 405 | 355 | 320 | 30 | 3 | 12-26 | 350 | 320 | 940 | |||||
| 300 | 250 | 485 | 430 | 390 | 40 | 4 | 16-30 | 300 | 460 | 410 | 375 | 30 | 4 | 12-26 | 350 | 320 | 980 | |||||
| A41H-40C A41Y-40P/R | 20 | 15 | 105 | 75 | 51 | 55 | 16 | 2 | 4 | 4-14 | 20 | 105 | 75 | 55 | 16 | 2 | 4-14 | 100 | 85 | 276 | ||
| 25 | 20 | 115 | 85 | 58 | 65 | 16 | 2 | 4 | 4-14 | 25 | 115 | 85 | 65 | 16 | 2 | 4-14 | 100 | 85 | 276 | |||
| 32 | 25 | 140 | 100 | 66 | 78 | 18 | 2 | 4 | 4-18 | 32 | 140 | 100 | 78 | 18 | 2 | 4-18 | 115 | 100 | 285 | |||
| 40 | 32 | 150 | 110 | 76 | 85 | 18 | 3 | 4 | 4-18 | 40 | 150 | 110 | 85 | 18 | 3 | 4-18 | 120 | 110 | 292 | |||
| 50 | 40 | 165 | 125 | 88 | 100 | 20 | 3 | 4 | 4-18 | 50 | 165 | 125 | 100 | 20 | 3 | 4-18 | 135 | 120 | 370 | |||
| 65 | 50 | 185 | 145 | 110 | 120 | 22 | 3 | 4 | 8-18 | 65 | 185 | 145 | 120 | 20 | 3 | 4-18 | 140 | 130 | 375 | |||
| 80 | 65 | 200 | 160 | 121 | 135 | 22 | 3 | 4 | 8-18 | 80 | 200 | 160 | 135 | 20 | 3 | 8-18 | 160 | 135 | 373 | |||
| 100 | 80 | 235 | 190 | 150 | 160 | 24 | 3 | 4.5 | 8-23 | 100 | 220 | 180 | 155 | 22 | 3 | 8-18 | 170 | 160 | 513 | |||
| 125 | 100 | 270 | 220 | 176 | 188 | 28 | 3 | 4.5 | 8-26 | 125 | 250 | 210 | 185 | 22 | 3 | 8-18 | 190 | 190 | 560 | |||
| 150 | 125 | 300 | 250 | 204 | 218 | 30 | 3 | 4.5 | 8-26 | 150 | 285 | 240 | 210 | 24 | 3 | 8-23 | 205 | 195 | 570 | |||
| 200 | 150 | 375 | 320 | 260 | 282 | 38 | 3 | 4.5 | 12-30 | 200 | 340 | 295 | 265 | 26 | 3 | 12-23 | 240 | 230 | 717 | |||
| 250 | 200 | 450 | 385 | 313 | 345 | 42 | 3 | 4.5 | 12-34 | 250 | 405 | 355 | 320 | 30 | 3 | 12-26 | 350 | 320 | 940 | |||
| 300 | 250 | 515 | 450 | 364 | 408 | 46 | 4 | 4.5 | 16-34 | 300 | 460 | 410 | 375 | 30 | 4 | 12-26 | 350 | 320 | 980 | |||
| A41H-64C A41Y-64 C/P/R | 20 | 15 | 130 | 90 | 51 | 68 | 20 | 2 | 4 | 4-18 | 20 | 105 | 75 | 55 | 51 | 16 | 2 | 4 | 4-14 | 100 | 95 | 268 |
| 25 | 20 | 140 | 100 | 58 | 78 | 22 | 2 | 4 | 4-18 | 25 | 115 | 85 | 65 | 58 | 16 | 2 | 4 | 4-14 | 100 | 95 | 268 | |
| 32 | 25 | 155 | 110 | 66 | 82 | 24 | 2 | 4 | 4-23 | 32 | 140 | 100 | 78 | 66 | 18 | 2 | 4 | 4-18 | 115 | 105 | 279 | |
| 40 | 32 | 170 | 125 | 76 | 95 | 24 | 3 | 4 | 4-23 | 40 | 150 | 110 | 85 | 76 | 18 | 3 | 4 | 4-18 | 135 | 115 | 330 | |
| 50 | 40 | 180 | 135 | 88 | 105 | 26 | 3 | 4 | 4-23 | 50 | 165 | 125 | 100 | 88 | 20 | 3 | 4 | 4-18 | 160 | 125 | 360 | |
| 65 | 50 | 205 | 160 | 110 | 130 | 28 | 3 | 4 | 8-23 | 65 | 185 | 145 | 120 | 110 | 22 | 3 | 4 | 8-18 | 175 | 160 | 503 | |
| 80 | 65 | 215 | 170 | 121 | 140 | 30 | 3 | 4 | 8-23 | 80 | 200 | 160 | 135 | 121 | 22 | 3 | 4 | 8-18 | 175 | 160 | 498 | |
| 100 | 80 | 250 | 200 | 150 | 168 | 32 | 3 | 4.5 | 8-26 | 100 | 235 | 190 | 160 | 150 | 24 | 3 | 4.5 | 8-23 | 190 | 180 | 530 | |
| 150 | 100 | 345 | 280 | 204 | 240 | 38 | 3 | 4.5 | 8-34 | 150 | 300 | 250 | 218 | 204 | 30 | 3 | 4.5 | 8-26 | 280 | 260 | 657 | |
| A41H-100C A41Y-100 C/P/R | 20 | 15 | 130 | 90 | 51 | 68 | 22 | 2 | 4 | 4-18 | 20 | 105 | 75 | 55 | 51 | 16 | 2 | 4 | 4-14 | 100 | 95 | 268 |
| 25 | 20 | 140 | 100 | 58 | 78 | 24 | 2 | 4 | 4-18 | 25 | 115 | 85 | 65 | 58 | 16 | 2 | 4 | 4-14 | 100 | 95 | 268 | |
| 32 | 25 | 155 | 110 | 66 | 82 | 24 | 2 | 4 | 4-23 | 32 | 140 | 100 | 78 | 66 | 18 | 2 | 4 | 4-18 | 115 | 105 | 279 | |
| 40 | 32 | 170 | 125 | 76 | 95 | 26 | 3 | 4 | 4-23 | 40 | 150 | 110 | 85 | 76 | 18 | 3 | 4 | 4-18 | 135 | 115 | 330 | |
| 50 | 40 | 195 | 145 | 88 | 112 | 28 | 3 | 4 | 4-26 | 50 | 165 | 125 | 100 | 88 | 20 | 3 | 4 | 4-18 | 160 | 125 | 360 | |
| 65 | 50 | 220 | 170 | 110 | 138 | 32 | 3 | 4 | 8-26 | 65 | 185 | 145 | 120 | 110 | 22 | 3 | 4 | 8-18 | 175 | 160 | 503 | |
| 80 | 65 | 230 | 180 | 121 | 148 | 34 | 3 | 4 | 8-26 | 80 | 200 | 160 | 135 | 121 | 22 | 3 | 4 | 8-18 | 175 | 160 | 498 | |
| 100 | 80 | 265 | 210 | 150 | 172 | 38 | 3 | 4.5 | 8-30 | 100 | 235 | 190 | 160 | 150 | 24 | 3 | 4.5 | 8-23 | 190 | 180 | 530 | |
| 150 | 100 | 355 | 290 | 204 | 250 | 46 | 3 | 4.5 | 12-34 | 150 | 300 | 250 | 218 | 204 | 30 | 3 | 4.5 | 8-26 | 280 | 260 | 657 |
Technical Documentation
1.execution standard GB/T 12243-2021
2.Structural length standard:GB/T12221-2005
3.Flange Standard:GB/T9113.1-2000
4.试验标准:GB/T13927-2022
Product Parts List
| serial number | name | A41H-C/A41Y-Cmaterial | A41Y-Pmaterial | A41Y-Rmaterial |
| 1 | valve body | WCB | CF8 | CF8M |
| 2 | valve seat | 20Cr13/304 | 304 | 316 |
| 3 | Adjustment Circle | 20Cr13/304 | 304 | 316 |
| 4 | valve disc | 20Cr13/304 | 304 | 316 |
| 5 | guide bushing | 20Cr13/304 | 304 | 316 |
| 6 | valve cover | 25# | 25# | 25# |
| 7 | spring | 50CrVA | 50CrVACovering fluoroplastic | 50CrVACovering fluoroplastic |
| 8 | valve stem | 20Cr13 | 20Cr13 | 20Cr13 |
| 9 | adjusting screw | 45# | 20Cr13 | 20Cr13 |
| 10 | 保护罩 | ZG200-400 | ZG200-400 | ZG200-400 |
| 11 | 密封面 | 堆焊D507 | 堆焊Co基硬质合金 | |
spring微启封闭式安全阀安装说明
1、安全阀必须垂直安装,并好直接安装在容器或管道的接头上。接头内径应不小于安全阀的进口path。
2、安全阀的出口必须装设适当的膨胀节,以防止排放管的热膨胀给安全阀带来不应有的热应力。排放管内径应比阀门出口直径大,长度尽可能短,避免拐弯。排放管及膨胀节重量不应作用在安全阀上,应固定在建筑上。排放管的中心线与valve body的中心线间距离尽可能的短。对每台安全阀都应单独装设排放管。
3、消声器的出口处要有足够的面积,防止产生背压影响阀门的排放能力。
Related Information
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