详细说明
YFA72W真空负压安全阀适用于温度≤200℃的负压系统,当容器内负压超过允许值时,该阀自动开启，吸入空气；当容器内负压达到允许值时,该阀自动关闭,从而保护设备及系统。安装在正常非负压系统,当容器和系统的放散阀未打开,产生负压时,此阀自动开启。
真空负压安全阀性能规范
| 工作温度 Working temperature | ≤200℃ |
| 适用介质 Suitable medium | TFA72W-10P适用于硝酸类介质 Nitric acid etc.medium |
| TFA72W-10R适用于醋酸类介质 Acetic acid etc.medium |
零件材料
| NO. | 零件名称 Name of part | TFA72W-P 材料 Materials | TFA72W-R 材料 Materials |
| 1 | 阀体Body | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti |
| 2 | 阀座 Nozzle | 1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti |
| 3 | 调节阀Adjusting ring | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 4 | 阀盖 Bonnet | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 5 | 阀杆Stem | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| 6 | 弹簧 Spring | 50CrVA | 50CrVA 包覆氟塑料Coated Teflon |
主要外形尺寸
| 公称通径DN(mm)Nominal diameter | 尺寸Dimension(mm) |
| D | D1 | D2 | Z-Фd | b | f1 | H |
| 15 | 95 | 65 | 45 | 4-14 | 14 | 2 | 110 |
| 20 | 105 | 75 | 55 | 4-14 | 16 | 2 | 130 |
| 25 | 115 | 85 | 65 | 4-14 | 16 | 2 | 150 |
| 32 | 140 | 100 | 78 | 4-18 | 18 | 2 | 180 |
| 40 | 150 | 110 | 85 | 4-18 | 18 | 3 | 200 |
| 50 | 165 | 125 | 100 | 4-18 | 20 | 3 | 221 |
| 80 | 200 | 160 | 135 | 4-18 | 22 | 3 | 245 |
| 100 | 220 | 180 | 155 | 8-18 | 22 | 3 | 253 |
| 125 | 250 | 210 | 185 | 8-18 | 24 | 3 | 280 |
| 150 | 285 | 240 | 210 | 8-23 | 24 | 3 | 329 |
| 200 | 340 | 295 | 265 | 8-23 | 26 | 3 | 377 |
| 250 | 395 | 350 | 320 | 12-23 | 28 | 3 | 440 |