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真空负压安全阀

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真空负压安全阀

真空负压安全阀

Product Category:其他安全阀

Production base: Xiaotang Industrial Zone, Yongxing, Longwan District, Wenzhou City, Zhejiang Province Sales Department One：0577-85981234 85888488 Fax：0577-86938649 Sales Department Two：0577-86937649 85983667 Fax： 0577-85983668 Mail：yute@yute.cn Contact Us
Product Introduction

YFA72W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。

主要零部件材料

NO.
零件名称
YFA72W-P材料
YFA72W-R材料
1
阀体
ZG1Cr18Ni9Ti
ZG1Cr18Ni12Mo2Ti
2
阀座
1Cr18Ni9Ti
ZG1Cr18Ni12Mo2Ti
3
调节圈
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
4
阀盖
ZG1Cr18Ni9Ti
1Cr18Ni9Ti
5
阀杆
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
6
弹簧
50CrVA
50CrVA包覆氟塑料


工作温度
≤200℃
适用介质
YFA72W-10P适用于硝酸类介质
YFA72W-10R适用于醋酸类介质


外形尺寸和连接尺寸

公称通径
尺寸
D
D1
D2
Z-ød
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



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