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Steam Safety Valve
Body: Cast Iron, WCB, SS304, SS316, Ductile Iron
Nozzle: SS304, SS316
Adjusting Ring: SS304, SS316
Disc: SS304, SS316
Guide Sleeve: SS304, SS316
Bonnet: Carbon Steel
Spring: Steel
Stem: SS304, SS316
Adjusting Bolt: Stainless Steel
Cap: Carbon Steel
Working Pressure: PN1.6, PN2.5, PN4.0, Class 150 to Class 300
End Connection: NPT, RF, RTJ
Design and Manufacture Standard: ASME 25.3, API 520, API 521, API 526, API 527
Face to Face Dimension: ASME B16.10, EN558-1, DIN 3202
End Connection Dimension: ASME B16.5, DIN 2543, DIN 2545, EN 12627
Test Standards: API 598, DIN 3230
Dimensions
| Diameter(in) | d0 | D | D1 | D2 | b | t | Z- Φd | DN’ | D’ | D1′ | D2′ | b’ | t | Z’-Φd’ | L | L1 | H |
| 1/2″x3/4″ | D | 89 | 60.5 | 35 | 12 | 5 | 4-15 | 20 | 98 | 70 | 43 | 14 | 1.6 | 4-15 | 90 | 90 | 290 |
| 3/4″x1″4-15 | D | 98 | 70 | 43 | 14 | 5 | 4-15 | 25 | 108 | 79.5 | 51 | 15 | 1.6 | Â 4-15 | 96 | 92 | 310 |
| 1″x11/2″ | D | 108 | 79.5 | 51 | 15 | 5 | 4-15 | 40 | 127 | 98.5 | 73 | 18 | 1.6 | Â 4-15 | 115 | 105 | 320 |
| 1″x2″ | D | 108 | 79.5 | 51 | 15 | 5 | 4-15 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 115 | 105 | 320 |
| 11/2″x2″ | G | 127 | 98.5 | 73 | 18 | 5 | 4-15 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 121 | 124 | 350 |
| 11/2″x21/2″ | G | 127 | 98.5 | 73 | 18 | 5 | 4-15 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 121 | 124 | 360 |
| 11/2″x3″ | G | 127 | 98.5 | 73 | 18 | 5 | 4-15 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 360 |
| 2″x21/2″ | H | 152 | 120.5 | 92 | 18 | 5 | 4-19 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 124 | 130 | 380 |
| 2″x3″ | J | 152 | 120.5 | 92 | 18 | 5 | 4-19 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 380 |
| 21/2″x4″ | J | 178 | 139.5 | 105 | 20 | 5 | 4-19 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 143 | 137 | 380 |
| 3″x4″ | L | 190 | 152.5 | 127 | 22 | 5 | 4-19 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 162 | 156 | 480 |
| 4″x6″ | N | 229 | 190.5 | 157 | 24 | 10 | 8-19 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | Â 8-22 | 210 | 197 | 540 |
| 6″x8″ | P | 279 | 241.5 | 216 | 26 | 10 | 8-22 | 200 | 343 | 298.5 | 270 | 29 | 1.6 | Â 8-22 | 241 | 240 | 760 |
| 8″x10″ | R | 343 | 298.5 | 270 | 29 | 10 | 8-22 | 250 | 406 | 362 | 324 | 31 | 1.6 | Â 12-25 | 279 | 276 | 830 |
| 12″x14″ | T | 483 | 432 | 381 | 32 | 10 | 12-25 | 350 | 533 | 476 | 413 | 35 | 1.6 | Â 12-29 | 370 | 360 | 890 |
| body-material | Cast iron, Cast Steel, Ductile Iron, Stainless steel |
|---|---|
| class | 150/PN16, PN25, PN40 |
| size | 1 1/2"x2 1/2", 1 1/4"x2", 1"x1 1/2", 1/2"x1", 2 1/2"x4", 2"X3", 3"X5", 3/4"x1 1/4", 4"X6", 5"x8", 6"x10" |
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