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Type A42C Safety Valve
Safety Valves, angle type
Full lift safety valve
Standard safety valve for fluids
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, vapours and fluids."
Working temperatures:
-60°C up to +200°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 | ||||
| Appropriate temp. | 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 | |||
Main Dimensions
Remark: 150Lb for outlet flange
| A41C900, A41C900P, A41C900R | |||||||||||||||||
| Nominal Diameter (in) | Dimensions(mm) Inlet flange 900Lb | ||||||||||||||||
| d0 | D | D1 | D2 | b | t | Z-Φd | DN' | D' | D1' | D2' | b' | t | Z'-Φd' | L | L1 | H | |
| 11/2" x2" | F | 178 | 123.8 | 73 | 32 | 10 | 4-29 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 115 | 124 | 360 |
| 2" x 3" | H | 216 | 165.1 | 92 | 38 | 10 | 8-25 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 162 | 154 | 390 |
| 3" x4" | J | 241 | 190.5 | 127 | 38 | 10 | 8-25 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 181 | 184 | 480 |
| 4" x6" | K | 292 | 234.9 | 157 | 44 | 12 | 8-32 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | 8-22 | 222 | 197 | 540 |
Remark: 150Lb for outlet flange
| A41C1500, A41C1500P, A41C1500R | |||||||||||||||||
| Nominal Diameter (in) | Dimensions(mm) Inlet flange 1500Lb | ||||||||||||||||
| d0 | D | D1 | D2 | b | t | Z-Φd | DN' | D' | D1' | D2' | b' | t | Z'-Φd' | L | L1 | H | |
| 3/4" x 1" | D | 130 | 88.9 | 43 | 20 | 10 | 4-22 | 25 | 124 | 89 | 51 | 18 | 1.6 | 4-19 | 120 | 136 | 310 |
| 11/2" x 2" | D | 178 | 123.8 | 73 | 26 | 12 | 4-28 | 50 | 165 | 127 | 92 | 22 | 1.6 | 8-19 | 140 | 105 | 360 |
| 11/2" x 21/2" | F | 178 | 123.8 | 73 | 26 | 12 | 4-28 | 65 | 190 | 149 | 105 | 24 | 1.6 | 8-22 | 152 | 124 | 360 |
| 2" x 3" | F | 216 | 165.1 | 92 | 32 | 15 | 8-25 | 80 | 210 | 168.5 | 127 | 28 | 1.6 | 8-22 | 162 | 154 | 380 |
| 3" x 4" | J | 267 | 203.2 | 127 | 42 | 14 | 8-32 | 100 | 254 | 200 | 157 | 32 | 1.6 | 8-22 | 181 | 184 | 490 |
Remark: 300Lb for outlet flange
Materials for main parts
| NO | Name of part | Materials A42H-C | Materials A42Y-P | Materials A42Y-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 |
| 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
Closed bonnet with Cap