A72W Vacuum Negative Pressure Safety Valve
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 |
Send Inquiry to This Supplier
You May Also Like
-
DIN 900 Series Spring Loaded Safety Relief ValveNegotiableMOQ: 1 Unit
-
A41 Closed Spring Loaded Low Lift Type High Safety Relief ValveNegotiableMOQ: 1 Unit
-
A42 Spring Loaded Full Lift Type Safety Relief ValveNegotiableMOQ: 1 Unit
-
A44 Spring Loaded Full Lift Safety Relief ValveNegotiableMOQ: 1 Unit
-
A46F/H/Y Pilot-operated Pressure Relief ValveNegotiableMOQ: 1 Unit
-
AQ-20 Air Compressor Safety ValveNegotiableMOQ: 1 Unit
-
FT14 Ball Float Steam Trap (Threaded)NegotiableMOQ: 1 Unit
-
FT43 Ball Float Steam TrapNegotiableMOQ: 1 Unit
-
FT44 Ball Float Steam TrapNegotiableMOQ: 1 Unit
-
TD42 Thermodynamic Steam TrapNegotiableMOQ: 1 Unit

