Provided as safety device for protection against excessive pressurein pressure vessels
Approved for gases and fluids
Working temperatures:-60°Cup to +200°Cfor stainless steel material
-29°C up to300°C for cast steel material
Design and Manufacture:API RP 520
Face to Face(end to end):API 526
Test and Inspection:API 527
Nominal pressure | PN(Class) | 150 | 300 | 600 | 900 | 1500 |
Body strength | Ps(Mpa) | 3.0 | 7.5 | 15 | 22.5 | 37.5 |
Set pressure | Pk(Mpa) | 0.1-2 | 1.6-5 | 3.2-10 | 8-25 | 10-25 |
Seal pressure | Pm(Mpa) | 90%Pk | ||||
Reseation pressure | Ph(Mpa) | ≥90%Pk | ||||
Relieving Pressure | Pp(Mpa) | ≤1.1Pk | ||||
Lift height | H(mm) | ≥1/20 d0 | ||||
Appropriate temp. | ≤200℃ | |||||
Appropriate Medium | C(WCB) P, R (SS304, SS316) | Gas, Liquid Nitric Acetic Acid, Gas, Liquid |
Code | Diameter | Code | Diameter |
D | 10 | L | 50 |
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 |
No | Name of part | Materials A42H-C | Material A42Y-P | Material A42Y-R |
1 | Body | WCB | CF8 | CF8M |
2 | Nozzle | 2Cr13/ 304 | CF8 | CF8M |
3 | Adjusting Ring | 2Cr13/ 304 | 304 | 316 |
4 | Disc | 2Cr13/ 304 | 304 | 316 |
5 | Guide sleeve | 2Cr13/ 304 | 304 | 316 |
6 | Bonnet | WCB | CF8 | CF8M |
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
For more details, please download catalogue for reference or contact with us.
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