Ball valve seat selection

Ball valve seats generally use special polymer materials and are commonly used in the petroleum, chemical, and electronic industries. They are known for their superior fatigue strength, weather resistance and high temperature resistance to chemicals.

Ball valve seat material

The ball valve seat material is made of PTFE, PTFE filled glass fiber, PCTFE, PVDF, PEEK, etc. When selecting ball valve seat materials, the following factors also need to be considered: The chemical properties of the medium: For corrosive media, materials with better corrosion resistance should be selected; for high-temperature media, materials with higher heat resistance should be selected. Working pressure: For ball valves working in high-pressure environments, the valve seat material should have sufficient strength and stability. Service life: Consider the wear resistance and fatigue resistance of the valve seat material to ensure that the valve maintains good performance in long-term use.

PTFE ball valve seat

PTFE valve seat is made of polytetrafluoroethylene (PTFE) material and has been widely used in the industrial field because of its unique physical and chemical properties. The following is a detailed introduction to PTFE valve seats:

1. Excellent corrosion resistance: PTFE is a material with high chemical stability and is almost not corroded by any strong acid, strong alkali, oxidizing agent and reducing agent. This excellent corrosion resistance enables PTFE valve seats to maintain long-term stability and reliability in various corrosive media.
2. Excellent sealing performance:PTFE has a low friction coefficient and good self-lubricating properties, which reduces the friction between the valve seat and the ball, makes it easy to operate, and ensures a good sealing effect. This sealing performance enables the PTFE valve seat to effectively prevent medium leakage under high pressure, high temperature or vacuum conditions.
3. Good heat resistance and cold resistance:PTFE valve seat can work in a wide temperature range from -250°C to +260°C without significant performance degradation. This allows it to maintain stable operation in extreme temperature environments.
4. High purity and non-toxicity:PTFE material is of high purity, non-toxic and tasteless, and complies with the hygienic standards of the food and pharmaceutical industries. Therefore, PTFE valve seats are particularly suitable for industries such as food, medicine and biotechnology to ensure the purity and safety of fluids.
5. Good processing performance:PTFE material is easy to process and shape, and valve seats of various shapes and specifications can be easily manufactured to meet the needs of different valves. It should be noted that although PTFE valve seats have many advantages, their hardness is relatively low and their resistance to sharp objects is poor. Therefore, scratches or impacts from sharp objects need to be avoided during installation and use. In addition, in some special cases, such as high temperature, high pressure or high-speed flowing media, additional protective measures may be required to ensure the long-term stability of the PTFE valve seat.

PTFE filled fiberglass ball valve seat

PTFE-filled fiberglass valve seats are more durable than ordinary PTFE valve seats, and they can withstand higher pressures. PTFE filled fiberglass valve seats are particularly suitable for high pressure and high temperature applications. This enhances the compressive strength of the valve seat and helps resist wear. It is also self-lubricating, reducing the need for lubricants.

PEEK ball valve seat

The PEEK ball valve seat is a high-performance valve component made of polyetherketone (PEEK), an advanced polymer material with excellent properties.

1. High temperature resistance: PEEK material has excellent high temperature resistance, and the U.S. UL certification has a long-term use temperature of up to 260°C. Even in environments up to 300°C, the PEEK ball valve seat can still maintain its good mechanical properties, ensuring that the valve works stably in high temperature environments.
2. Wear resistance and self-lubrication:PEEK material has excellent wear resistance and is especially suitable for harsh environments such as high temperature, high load and strong corrosion. In addition, PEEK also has a low friction coefficient, enabling oil-free lubrication operation, thereby extending the service life of the valve.
3. Corrosion resistance:PEEK material is insoluble in common solvents and has good corrosion resistance against various organic and inorganic chemical reagents. This makes the PEEK ball valve seat more secure and stable when handling corrosive media.
4. Valve performance and application: PEEK ball valve seats are widely used in the valve field, especially in the control of high temperature, high pressure and highly corrosive media. Its excellent sealing performance and control performance enable PEEK ball valve to effectively control the flow and pressure of the medium. In addition, the application range of PEEK ball valve seats also covers petrochemical, chemical, electric power, thermal energy and other industries, providing efficient, safe and stable valve solutions for the production of these industries.

In general, PEEK ball valve seat is a high-performance valve component with excellent high temperature resistance, wear resistance, self-lubricating and corrosion resistance. Its superior performance makes PEEK ball valves have wide application value in harsh environments such as high temperature, high pressure and strong corrosion, providing reliable and efficient valve solutions for various industries.

PVDF ball valve seat

PVDF valve seats, made of polyvinylidene fluoride (PVDF) material, have a series of significant advantages and characteristics, making them popular in many industrial applications. PVDF valve seats exhibit excellent chemical resistance. It can resist the erosion of a variety of strong acids, strong alkali and organic solvents, ensuring that the valve can maintain stable operation even in harsh working environments. This characteristic makes it have broad application prospects in chemical, pharmaceutical, petroleum and other industries. Not only that, PVDF valve seats also show good sealing performance. Its surface has good lubricity and can achieve excellent sealing effect under high pressure, reducing the risk of leakage and improving work efficiency. Become an ideal choice in industrial applications. It can ensure the stable operation of the valve in various harsh environments and improve the safety and reliability of the fluid control system.