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 |