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Technical Data
| Pressure | Class | 150 | 300 | 600 |
| Body strength | Ps (MPa) | 3.0 | 7.5 | 15 |
| Set pressure | Pk (MPa) | 0.1~2 | 1.6~5 | 3.2~10 |
| Seal pressure | Pm | 90Pk | ||
| Reseating pressure | Ph | =90Pk | ||
| Relieving pressure | Pp | =1.1Pk | ||
| Lift | H (mm) | =1/4 do | ||
| Appropriate temperature | =350°C | |||
| Appropriate medium | Steam | |||
Dimensions (mm)
| A48C150 | |||||||||||||||||
| Normal Diameter DN (in) |
Dimension (mm) | ||||||||||||||||
| do | D | D1 | D2 | b | t | z-¢d | DN' | D' | D1' | D2' | b' | t' | z-¢d' | L | L1 | H | |
| 1/2''×3/4'' | D | 89 | 60.5 | 35 | 12 | 6 | 4-15 | 20 | 98 | 70 | 43 | 14 | 1.6 | 4-15 | 90 | 90 | 290 |
| 3/4'' ×1'' | D | 98 | 70 | 43 | 14 | 6 | 4-15 | 25 | 108 | 79.5 | 51 | 15 | 1.6 | 4-15 | 96 | 92 | 310 |
| 1'' ×1 1/2'' | D | 108 | 79.5 | 51 | 15 | 7 | 4-15 | 40 | 127 | 98.5 | 73 | 18 | 1.6 | 4-15 | 115 | 105 | 320 |
| 1'' ×2'' | D | 108 | 79.5 | 51 | 15 | 7 | 4-15 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 115 | 105 | 320 |
| 1 1/2'' ×2'' | G | 127 | 98.5 | 73 | 18 | 6 | 4-15 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 121 | 124 | 350 |
| 1 1/2'' ×2 1/2'' | G | 127 | 98.5 | 73 | 18 | 6 | 4-15 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 121 | 124 | 360 |
| 1 1/2'' ×3'' | G | 127 | 98.5 | 73 | 18 | 6 | 4-15 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 360 |
| 2'' ×2 1/2'' | H | 152 | 120.5 | 92 | 18 | 6 | 4-19 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 124 | 130 | 380 |
| 2'' ×3'' | J | 152 | 120.5 | 92 | 18 | 6 | 4-19 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 380 |
| 2 1/2'' ×4'' | J | 178 | 139.5 | 105 | 20 | 7 | 4-19 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 143 | 137 | 380 |
| 3'' ×4'' | L | 190 | 152.5 | 127 | 22 | 10 | 4-19 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 162 | 156 | 480 |
| 4'' ×6'' | N | 229 | 190.5 | 157 | 24 | 12 | 8-19 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | 8-22 | 229 | 181 | 540 |
| 6'' ×8'' | P | 279 | 241.5 | 216 | 26 | 10 | 8-22 | 200 | 343 | 298.5 | 270 | 29 | 1.6 | 8-22 | 241 | 240 | 760 |
| 8'' ×10'' | R | 343 | 298.5 | 270 | 29 | 10 | 8-22 | 250 | 406 | 362 | 324 | 31 | 1.6 | 12-25 | 279 | 276 | 830 |
| 12'' ×14'' | T | 483 | 432 | 381 | 32 | 10 | 12-25 | 350 | 533 | 476 | 413 | 35 | 1.6 | 12-28 | 370 | 360 | 890 |
| A48C300 | |||||||||||||||||
| Normal Diameter DN (in) |
Dimension (mm) | ||||||||||||||||
| do | D | D1 | D2 | b | t | z-¢d | DN' | D' | D1' | D2' | b' | t' | z-¢d' | L | L1 | H | |
| 12/'' ×3/4'' | D | 95 | 66.5 | 35 | 15 | 6 | 4-15 | 20 | 98 | 70 | 43 | 14 | 1.6 | 4-15 | 90 | 90 | 290 |
| 3/4'' ×1'' | D | 117 | 82.5 | 43 | 16 | 10 | 4-19 | 25 | 105 | 79.5 | 51 | 15 | 1.6 | 4-15 | 96 | 92 | 310 |
| 1'' ×1 1/2'' | D | 124 | 90 | 51 | 18 | 7 | 4-19 | 40 | 127 | 98.5 | 73 | 18 | 1.6 | 4-15 | 115 | 105 | 320 |
| 1'' ×2'' | D | 124 | 90 | 51 | 18 | 6 | 4-19 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 115 | 105 | 320 |
| 1 1/2'' ×2'' | F | 156 | 114.5 | 73 | 20 | 6 | 4-22 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 121 | 124 | 350 |
| 1 1/2'' ×2 1/2'' | F | 156 | 114.5 | 73 | 20 | 9 | 4-22 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 121 | 124 | 360 |
| 1 1/2'' ×3'' | F | 156 | 114.5 | 73 | 20 | 6 | 4-22 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 360 |
| 2'' ×2 1/2'' | H | 165 | 127 | 92 | 22 | 6 | 8-19 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 124 | 130 | 380 |
| 2'' ×3'' | H | 165 | 127 | 92 | 22 | 6 | 8-19 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 380 |
| 2 1/2'' ×4'' | J | 190 | 149.5 | 105 | 24 | 7 | 8-22 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 143 | 137 | 380 |
| 3'' ×4'' | L | 210 | 168 | 127 | 28 | 10 | 8-22 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 162 | 156 | 480 |
| 4'' ×6'' | N | 254 | 200 | 157 | 32 | 12 | 8-22 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | 8-22 | 229 | 181 | 540 |
| 6'' ×8'' | P | 318 | 270 | 216 | 38 | 10 | 12-22 | 200 | 343 | 298.5 | 270 | 29 | 1.6 | 8-22 | 241 | 240 | 760 |
| 8'' ×10'' | R | 381 | 330 | 270 | 42 | 10 | 12-25 | 250 | 406 | 362 | 324 | 31 | 1.6 | 12-25 | 279 | 276 | 830 |
| A48C600 | |||||||||||||||||
| Normal Diameter DN (in) |
Dimension (mm) | ||||||||||||||||
| do | D | D1 | D2 | b | t | z-¢d | DN' | D' | D1' | D2' | b' | t' | z-¢d' | L | L1 | H | |
| 3/4''×1'' | D | 117 | 82.5 | 43 | 16 | 10 | 4-19 | 25 | 108 | 79.5 | 51 | 15 | 1.6 | 4-15 | 96 | 92 | 310 |
| 1'' ×2'' | D | 124 | 90 | 51 | 19 | 6 | 4-19 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 115 | 105 | 320 |
| 1 1/2'' ×2'' | F | 156 | 114.5 | 73 | 22 | 10 | 4-22 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 152 | 124 | 360 |
| 1 1/2'' ×2 1/2'' | F | 156 | 114.5 | 73 | 22 | 9 | 4-22 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 152 | 214 | 380 |
| 1 1/2'' ×3'' | F | 156 | 114.5 | 73 | 22 | 6 | 4-22 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 152 | 124 | 380 |
| 2'' ×2 1/2'' | H | 165 | 127 | 92 | 26 | 6 | 8-19 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 162 | 154 | 410 |
| 2'' ×3'' | H | 165 | 127 | 92 | 26 | 6 | 8-19 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 162 | 154 | 410 |
| 2 1/2'' ×4'' | K | 190 | 149.5 | 105 | 29 | 7 | 8-22 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 143 | 165 | 410 |
| 3'' ×4'' | K | 210 | 168 | 127 | 32 | 10 | 8-22 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 162 | 155 | 480 |
| 4'' ×6'' | N | 273 | 215.9 | 157 | 38 | 12 | 8-25 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | 8-22 | 210 | 200 | 540 |
| 6'' ×8'' | P | 292 | 292 | 216 | 46 | 10 | 12-28 | 200 | 343 | 298.5 | 270 | 29 | 1.6 | 8-22 | 241 | 240 | 760 |
Supplier: Saitai Valve, China
Manufacturer: Shop in Shanghai Qingpu Industrial Park
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Catalog:Safety Relief Valves