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| 铸钢闸阀,截止阀和止回阀 Cast Steel Gate, Globe and Check Valves |
| 如何订购 How To Order |
总装和测试的八个重要步骤 Eight Important Steps in Assembly & Testing |
美国威兰阀门公司 |
| 阀座气密性和性能上的显著改善 Make the Difference in Seat Tightness and Performance |
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| 1. 钨铬钴合金6硬面阀座的自动化密封焊接。 1. Automatic seal welding of Stellite 6 hardfaced seats. |
2. 阀座焊接水下空气测试。 2. Air-under-water test of the seat’s welds. |
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| 3. 密封焊接后阀座表面的重新研磨。 3. Relapping of seating faces after seal welding. |
4. 用量规和垫片来确定最终的阀座/阀座角度,从而确定 理想的楔板角度(DN150-DN1500)。 4. Determination of final seat/seat angle with gauge and shims to determine ideal wedge angle (6 – 60"). |
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