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| 总装和检验的八个重要步骤使得阀座密封性和性能与众不同 Eight Important Steps in Assembly and Testing Make the Difference in Seat Tightness and Performance |
 美国威兰阀门公司 |
1 钨铬钴合金6正面硬化 阀座的自动密封焊接 Automatic seal welding of Stellite 6 hardfaced seats |
2 阀座密封焊接水下气体测试 Air-under-water test of the seat seal welds. |
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3 密封焊接后阀座面的再展延 Relapping of seating faces after seal welding. |
4 用仪表和垫片测定最后的阀座角度，以确定理想的楔角 Determination of final seat angle with gauge and shims to determine ideal wedge angle. |
5 对阀座表面进行精磨以配合相应的楔角 Precision grinding of individually fit wedge seating surfaces. |
6 楔板阀座表面的搭接 Lapping of wedge seating surfaces. |
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7 分配理想的相配的楔板， 放置和搭接到合适的阀体上 Assigning the ideally fitted wedge, ground and lapped, to proper valve body. |
8 总装后，对阀壳、阀座、填料和后座 进行零泄漏压力测试， After assembly, pressure testing of shell, seats, packing and backseat for 0-leakage. |
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