Products
- Control Valve
Electric and pneumatic regualting valve
CV3000 Regualting Valve
Self Operated Regulating Valve
Contact
Goole Valve Technology Co.,Ltd
Address: He yi Industrial Zone,Oubei Town,Wenzhou City,Zhejiang Province,P.R.China
Tel: 86-577- 57789961
FaxL86-577-57789962
Email:goole1@goolevalve.com,
Web:http://www.chinavalveonline.com
Safety Relief Valve
A72W Vacuum Negative Pressure Safety Valve
-
Vacuum Negative Pressure Safety Valve ( A72W-10P/R)
Detailed
Vacuum Negative Pressure Safety Valve ( A72W-10P/R)
Vacuum Negative Pressure Safety Valve Application:
Vaccum Negative pressure safety valve also can be called Vacuum Relief Valve.
1. Used for negative vacuum pressure systems: when the negative vacuum presssure in the container exceeds allowable value, safety valve will open automattically and absorb air so as to balance the external and internal pressure of the equipment. When the negative vacuum pressure in the container reaches the allowable value, the safety valve will close automatically so as to protect the equipment and the system.
2. Used for normal non negative or non vacuum pressure systems: It can be used for various kinds of corrosive medium, such as absorption tower, distillation tower, storage tank, tank, etc. If the radiation valve doesn't open after cleaning by injected steam, steam will condensate and produce negative pressure, the equipment installed can ensure safety.
Main Parts and Material.
 |
|
No. |
Part Name |
Part Material |
|
|
1 |
Body |
ZG1Cr18Ni9Ti |
ZG1Cr18Ni12Mo2Ti |
|
2 |
Nozzle |
1Cr18Ni9Ti |
ZG1Cr18Ni12Mo2Ti |
|
3 |
Adjusting ring |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
|
4 |
Bonnet |
ZG1Cr18Ni9Ti |
1Cr18Ni9Ti |
|
5 |
Stem |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
|
6 |
Spring |
50CrVA |
50CrVA+PTFE |
Vacuum Negative Pressure Safety Valve (Vacuum Relief Valve) Dimension:
 |
|
DN(mm) |
Dimension(mm) |
||||||
|
D |
D1 |
D2 |
Z-Фd |
b |
f |
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 |
