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特征：
- 管道螺纹：ASME B1.20.1，BS21 / 2779，DIN 2999/259 IS0228 / 1，JIS B0230 ISO 7/1
- 熔模铸造机构
- 金属密封
- 检验和测试：API 598
| Body | CF8/CF8M |
| Stem | SS304/SS316 |
| Packing | PTFE |
| Packing Gland | CF8/CF8M |
| Nut | SS304 |
| End Cap | CF8/CF8M |
| Gasket | PTFE |
| Disc | CF8/CF8M |
| Washer | SS304 |
| Plain Washer | ASTM A194 B8 |
| Hand Wheel | Aluminium alloy |
| Packing Sleeve | SS304 |
