Customization: | Available |
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Media: | Water |
Standard: | API 526 |
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Safety Valves/pressue safety valves, angle type
low lift safety valve
metal to metal seated, standard safety valve for liquids
Flanged connection acc. to ANSI B16.5
Applications
Provided as safety device for protection against excessive pressure in pressure vessels
Approved for gases and fluids
Working temperatures: -60°Cup to +200°Cfor stainless steel material
-29°C up to300°Cfor cast steel material
Standards Compliance
Design and Manufacture: API RP 520
Face to Face(end to end): API 526
Test and Inspection: API 527
Main property specification
Mormal Pressure |
PN |
150 |
300 |
600 |
900 |
1500 |
Body strength |
Ps(Mpa) |
3.0 |
7.5 |
15 |
22.5 |
38 |
Set pressure |
Pk(Mpa) |
0.1-2 |
1.6-5 |
3.2-10 |
8-25 |
10-25 |
Seal pressure |
Pm(Mpa) |
90%Pk |
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Reseation pressure |
Ph(Mpa) |
≥90%Pk |
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Relieving Pressure |
Pp(Mpa) |
≤1.1Pk |
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Lift height |
H(mm) |
≥1/4 d0 |
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Appropriatetemp. |
≤200ºC |
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Appropriate Medium |
C (WCB),P, R (SS304, SS316) |
Gas, Liquid,Nitric, Acetic Acid, Gas, Liquid |
Code of throat diameter
Code |
Diameter(mm) |
Code |
Diameter(mm) |
D |
10 |
L |
20 |
E |
13 |
M |
55 |
F |
16 |
N |
60 |
G |
20.5 |
P |
72 |
H |
26 |
Q |
96 |
J |
33 |
R |
115 |
K |
40 |
T |
148 |
Materials for main parts
NO | Name of part | Materials A41H-C | Materials A41Y-P | Materials A41Y-R |
1 | Body | WCB | 304 | 316 |
2 | Nozzle | 2Cr13/ 304 | 304 | 316 |
3 | Adjusting Ring | 2Cr13/ 304 | 304 | 316 |
4 | Disc | 2Cr13/ 304 | 304 | 316 |
5 | Guide sleeve | 2Cr13/ 304 | 304 | 316 |
6 | Bonnet | ZG230-450 | ZG230-450 | ZG230-450 |
7 | Spring | 50CrVA | 50CrVA coated teflon | 50CrVA coated teflon |
8 | Stem | 2Cr13 | 304 | 316 |
9 | Adjusting bolt | 45 | 2Cr13 | 2Cr13 |
10 | Cap | ZG200-400 | ZG200-400 | ZG200-400 |
Sealing surface of material "H" depositing D507, "Y" depositing stellite
Essential:
Valves are delivered at a set pressure, therefore when ordering
please confirm set pressure, medium and temperature
TS
Safety accessory and Safety protection device
Manufacture License of Special Equipment, People's republic of China
Main Dimensions
Remark: 150Lb for outlet flange
Remark: 150Lb for outlet flange