A42C Conventional Type Safety Valve
Safety Valve/pressure safety valve, angle type full lift safety valveConventional type, Standard safety valve for fluids and gasmetal to metal seatedFlanged connection acc. to ANSI B16.5
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A42C conventional type Safety Valve
Safety Valve/pressure safety valve, angle type
full lift safety valve
Conventional type, Standard safety valve for fluids and gas
metal to metal seated
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°C up to +300°C for stainless steel material, -29°C up to 300°C for 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 specifiecation
| Mormal Pressure | PN | 150 | 300 | 600 | 900 | 150 |
| 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 | ||||
| Reseation pressure | Ph(Mpa) | ≥90%Pk | ||||
| Relieving Pressure | Pp(Mpa) | ≤1.1Pk | ||||
| Lift height | H(mm) | ≥1/4 d0 | ||||
| Appropriatetemp. | C (WCB) P, R (SS304, SS316) | ≤300℃ ≤200℃ | ||||
| Appropriate Medium | Air, Oil, Steam, Water, Corrosive medium | |||||
Code of throat diameter
| Code | Diameter | Code | Diameter |
| 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 A42H-C | Materials A42Y-P | Materials 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 | ASTM 6150 | ASTM 6150 coated teflon | ASTM 6150 coated teflon |
| 8 | Stem | 2Cr13 | 304 | 316 |
| 9 | Adjusting bolt | 45 | 2Cr13 | 2Cr13 |
| 10 | Cap | A126 | CF8 | CF8M |
| 11 | Bellows | 304 | 316 | 316 |
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
Remark: 150Lb for outlet flange
Remark: 150Lb for outlet flange
Remark: 300Lb for outlet flange
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