The gas flow path of SP - 3420 gas chromatograph was modified by adding a 10-way switch valve for analyzing micro-amount CO and CO2 in polymer grade propylene.
Two, by the structural constraints of the structure to do the following Path DN200 valves, valve plates are the reasons for the overall structure of thick, large flow resistance.
受结构条件的限制该结构不适应做通径DN200以下阀门,原因是阀板整体结构太厚,流阻大。
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