VIP member
YFA72W Vacuum Negative Pressure Safety Valve
YFA72W vacuum negative pressure safety valve is suitable for negative pressure systems with temperatures ≤ 200 ℃. When the negative pressure inside th
Product details
YFA72W vacuum negative pressure safety valve is suitable for negative pressure systems with temperatures ≤ 200 ℃. When the negative pressure inside the container exceeds the allowable value, the valve automatically opens and sucks in air; When the negative pressure inside the container reaches the allowable value, the valve automatically closes to protect the equipment and system. Installed in a normal non negative pressure system, when the release valve of the container and system is not opened and negative pressure is generated, this valve automatically opens.
|
operation temperature
|
≤200℃
|
|
Applicable Medium
|
YFA72W-10P is suitable for nitric acid media
|
|
YFA72W-10R is suitable for acetic acid media
|
Material for main parts
|
NO.
|
Part name
|
YFA72W-P material
|
YFA72W-R material
|
|
1
|
valve body
|
ZG1Cr18Ni9Ti
|
ZG1Cr18Ni12Mo2Ti
|
|
2
|
valve seat
|
1Cr18Ni9Ti
|
ZG1Cr18Ni12Mo2Ti
|
|
3
|
Adjusting ring
|
1Cr18Ni9Ti
|
1Cr18Ni12Mo2Ti
|
|
4
|
valve cover
|
ZG1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
|
5
|
valve stem
|
1Cr18Ni9Ti
|
1Cr18Ni12Mo2Ti
|
|
6
|
spring
|
50CrVA
|
50CrVA coated fluoroplastic
|
Main overall dimensions
|
Nominal Diameter
|
size
|
||||||
|
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
|
Online inquiry
-
Contacts
-
Company
-
Telephone
-
Email
-
WeChat
-
Verification Code
-
Message Content
-