A42C Conventional Type Safety Valve
full lift safety valve, Conventional type, Standard safety valve for fluids, metal to metal seated, Flanged connection acc. to ANSI B16.5, Approved for gases and fluids
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A42C conventional type Safety Valve
Safety Valve/pressure safety valve, angle type
full lift safety valve
Applications:
Provided as safety device for protection against excessive pressure in pressure vessels
Standards Compliance:
Design and Manufacture: API RP 520
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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 stellit
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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