What are the characteristics of PTFE spraying on valve rings in petroleum machinery

Source：www.marydick.cn Release date： 2025年05月05日

Information summary：The PTFE (polytetrafluoroethylene) sprayed on the valve ring of petroleum machinery has the following characteristics: 1. Good chemical stability: PTFE has excellent chemical stability and can resist corrosion from petroleum and related media. Whether it is crude oil, refined oil, or petroleum products containing various chemical additives, it is difficult for PTFE to undergo chemical reactions.

The PTFE (polytetrafluoroethylene) sprayed on the valve ring of petroleum machinery has the following characteristics:
1. Good chemical stability: PTFE has excellent chemical stability and can resist corrosion from petroleum and related media. Whether it is crude oil, refined oil, or petroleum products containing various chemical additives, it is difficult for PTFE to undergo chemical reactions. This enables the valve ring to work stably for a long time in various complex chemical environments of petroleum machinery, extending the service life of the valve ring and reducing leakage caused by corrosion.
2. Low friction coefficient: PTFE has a lower friction coefficient, which helps reduce friction during the valve opening and closing process. On the one hand, it reduces the torque required to operate the valve, making the opening and closing of the valve easier and more flexible, and reducing energy consumption; On the other hand, it reduces the wear between the valve ring and other components, improves the sealing performance and work efficiency of the valve, and reduces the frequency of maintenance and replacement.
3. High temperature resistance: PTFE can maintain stable performance over a wide temperature range. It can withstand the common high temperature environment in the operation of petroleum machinery and can generally be used normally within the temperature range of -180 ℃ to 260 ℃. This enables the valve ring to operate reliably in high-temperature processes such as oil extraction and refining, without deformation, aging, or performance degradation due to temperature changes.
4. Good self-lubricating properties: PTFE has good self-lubricating properties, which can effectively reduce friction between the valve ring and other contact parts even in the absence of external lubrication conditions. This self-lubricating property can reduce the generation of wear particles, prevent particles from entering the petroleum medium and causing pollution, while also helping to maintain the normal operation of the valve and reduce failures caused by friction.
5. Excellent sealing performance: After spraying PTFE, the surface of the valve ring is smooth and can tightly fit with other sealing components of the valve, forming a good sealing effect. Whether in high-pressure or low-pressure environments, it can effectively prevent the leakage of petroleum media and ensure the safe and stable operation of petroleum machinery systems. At the same time, the elasticity and flexibility of PTFE also help it maintain good sealing performance under different working conditions.

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