Imported Valve Brand Common Material Analysis (Stem & Plug)

In the industrial valve selection system, material is the core factor determining valve applicability to working conditions, service life, and safety performance. Especially under special working conditions such as high temperature and high pressure, strong corrosion, and low temperature cryogenic environments, material selection directly relates to the stable operation and safety assurance of industrial systems. We will comprehensively sort out the material classifications of core components commonly used in imported valves, including body, sealing surfaces, and stems, and provide actionable material selection strategies based on specific working conditions, offering professional selection references for engineering technicians and procurement personnel. The previous two issues covered body and sealing surface materials. This time, we will discuss stem and plug materials.

1. Stem Materials

The valve stem requires high strength, wear resistance, and corrosion resistance. Common stem materials used in imported valves include:

Selection Key Points: The stem material must match the body material to avoid galvanic corrosion. The temperature and pressure requirements of the working conditions must also be considered.

2. Plug (Valve Core) Materials

The plug directly contacts the medium and requires good wear resistance, corrosion resistance, and sealing performance. Common plug materials used in imported valves include:

Selection Key Points: The plug material must be selected based on the corrosion level and abrasiveness of the medium. For high differential pressure conditions, materials with strong wear resistance must be chosen.

Conclusion

The stem and plug are key components for valve opening and closing. Material selection is critical. An incorrect choice not only easily leads to cost waste but may also cause numerous problems related to safety and production efficiency. Selecting the appropriate product according to suitable working conditions is an important skill engineers need to master.

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