Cast steel steam safety valve is used as protecting device in container or pipelines in case of pressure exceeding permitted value. The valve is applicable for steam, air, water and oil. Stem valve can closes automatically without manual reset after discharging pressure, which is completely different from Full Open safety valve. The body is made of cast steel.
Nominal diameter: DN20-300mm
Nominal pressure: PN1.0-10MPa
Materials
Part Name | Materials |
Body | WCB |
Base | ZG2Cr13 |
Adjusting ring | ZG2Cr13 |
Disc | 2Cr13 |
Guide sleeve | 2Cr13 |
Bonnet | ZG230-450 |
Spring | 50CrVA |
Stem | 2Cr13 |
Lever | ZG200-400 |
Stretching | 45 |
Shield | ZG200-400 |
Seal face | Cemented carbide |
Dimensions
Nominal Diameter DN(mm) | do | D | K | g | g1 | b | f | f1 | Z-ød | DN' | D1 | K1 | g2 | g' | b1 | f' | f1' | Z1-ød1 | L | L1 | ≈H |
20 | 15 | 105 | 75 |
| 55 | 16 | 2 |
| 4-14 | 20 | 105 | 75 | 55 |
| 16 | 2 |
| 4-14 | 100 | 85 | 270 |
25 | 20 | 115 | 85 |
| 65 | 16 | 2 |
| 4-14 | 25 | 115 | 85 | 65 |
| 16 | 2 |
| 4-14 | 100 | 85 | 270 |
32 | 25 | 140 | 100 |
| 78 | 18 | 2 |
| 4-18 | 32 | 140 | 100 | 78 |
| 18 | 2 |
| 4-18 | 115 | 100 | 312 |
40 | 32 | 150 | 110 |
| 85 | 18 | 3 |
| 4-18 | 40 | 150 | 110 | 85 |
| 18 | 3 |
| 4-18 | 120 | 110 | 320 |
50 | 40 | 165 | 125 |
| 100 | 20 | 3 |
| 4-18 | 50 | 165 | 125 | 100 |
| 20 | 3 |
| 4-18 | 135 | 120 | 390 |
65 | 50 | 185 | 145 |
| 120 | 20 | 3 |
| 4-18 | 65 | 185 | 145 | 120 |
| 20 | 3 |
| 4-18 | 140 | 130 | 395 |
80 | 65 | 200 | 160 |
| 135 | 20 | 3 |
| 8-18 | 80 | 200 | 160 | 135 |
| 20 | 3 |
| 8-18 | 160 | 135 | 400 |
100 | 80 | 220 | 180 |
| 155 | 22 | 3 |
| 8-18 | 100 | 220 | 180 | 155 |
| 22 | 3 |
| 8-18 | 170 | 160 | 600 |
125 | 100 | 250 | 210 |
| 185 | 22 | 3 |
| 8-18 | 125 | 250 | 210 | 185 |
| 22 | 3 |
| 8-18 | 190 | 190 | 620 |
150 | 125 | 285 | 240 |
| 210 | 24 | 3 |
| 8-23 | 150 | 285 | 240 | 210 |
| 24 | 3 |
| 8-23 | 205 | 195 | 625 |
200 | 150 | 340 | 295 |
| 265 | 26 | 3 |
| 12-23 | 200 | 340 | 295 | 265 |
| 26 | 3 |
| 12-23 | 240 | 230 | 798 |
250 | 200 | 405 | 355 |
| 320 | 30 | 3 |
| 12-26 | 250 | 405 | 355 | 320 |
| 30 | 3 |
| 12-26 | 350 | 320 | 981 |
300 | 250 | 460 | 410 |
| 375 | 30 | 4 |
| 12-26 | 300 | 460 | 410 | 375 |
| 30 | 4 |
| 12-26 | 350 | 320 | 1005 |
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