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与时俱进，诚赢客户
德国托马斯阀门 欧洲流体控制专家！
全国服务热线021-31001158
全国服务热线021-31001158
服务热线021-31001158
您的位置：德国托马斯阀门（Thomas） - 公司新闻
Maximum allowed back pressure: 15% of set pressure
| Materials | DIN EN | ASTM | |
| 1 | Inlet body | 1.4571 | A276 Grade 316Ti |
| 2 | Outlet body | 1.4308 | A 351 CF8 |
| 3 | Disc | 1.4541 | A 276 Grade 321 |
| 4 | Bellow | 1.4571 | A276 Grade 316Ti |
| 5 | Bellow stem | 1.4571 | A276 Grade 316Ti |
| 6 | Stem | CW453K | B103 UNSC52100 |
| 7 | Bonnet | 1.4305 | A314 Grade 303 |
| 8 | Spring | 1.4571 | A276 Grade 316Ti |
| 9 | Cap | 1.4301 | A 276 Grade 304 |
Standard Technical data
| Technical data (1-1/4 in preparation) | |||||
| Nominal size | GW | 1/2 | 3/4 | 1 | 1-1/4 |
| Orifice | do | 12.5 | 15 | 20 | 23 |
| Set pressure range | bar | 3.0-25.0 | 3.0-25.0 | 3.0-25.0 | 3.0-25.0 |
| Outlet | GA | G1 | G1 | G 1-1/4 | G 1-1/2 |
| Height | H | 186 | 190 | 205 | 255 |
| Length | L1 | 44 | 44 | 51 | 56 |
| Length | L2 | 52 | 54 | 63 | 65 |
| Wrench size across flats | Si | 36 | 36 | 41 | 50 |
| Wrench size across flats | S2 | 41 | 41 | 50 | 55 |
| Weight | ca. kg | 1.03 | 1.05 | 1.70 | 2.45 |
| Coeff. ofdisch. vapours, gases | aw | 0.60 | 0.50 | 0.60 | 0.66 |
| Coeff. ofdisch. fluids | aw | - | 0.39 | 0.45 | 0.48 |
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