The valve may be hooked up with none gasket unless it is required for some unique purpose. Tighten the nut of the flanges lightly & similarly, but avoid too much tightening. After installation take a look at the unfastened motion of the higher & lower pinching bar through beginning & closing the valve. The valve is then prepared for the service it's miles set up for. Fluorine-containing plasmas had been first investigated for the motive of etching patterns into silicon and silicon dioxide inside the mid-nineteen seventies
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发表于 2022-6-13 21:37:28
