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Stem Characteristics
- Aug 19, 2018 -

The stem is not only the moving part, the bearing part, but also the sealing part in the valve opening and closing process.At the same time, it is impacted and corroded by the medium, and friction with the filler.Therefore, when selecting the stem material, it must be guaranteed that it has sufficient strength, good impact toughness, abrasion resistance and corrosion resistance at the specified temperature.Stem is the vulnerable parts, when choosing, should also pay attention to the material mechanical processing performance and heat treatment performance.