PTFE butterfly valve sealing ring

Chemical butterfly valve is a commonly used valve type to control the flow of fluids in pipelines. It consists of valve body, valve disk, valve stem and seal element. The valve disk of the butterfly valve is similar to the wings of the butterfly, which can control the flow of the fluid and adjust the flow by rotating.

When choosing a sealed ring material, the following factors need to be considered

Chemical corrosion resistance
Due to the use of harmful chemicals in the chemical industry, sealing ring materials require good corrosion resistance and can resist the erosion of chemicals.

Temperature range
The sealing ring material needs to be able to adapt to temperature changes in the working environment, including high temperature and low temperature conditions.

Sealing performance
The sealing ring material needs good sealing performance and can effectively prevent the leakage of the media.

Friction
The friction coefficient of the sealing ring material should be as low as possible to ensure the smooth operation of the valve.

Abrasion resistance
The sealing ring material needs wear resistance and can withstand long -term use and friction.

According to different application needs, the selection of common sealing ring materials includes

Polytetrafluoroethylene (PTFE)
PTFE has excellent corrosion resistance and low friction coefficient, which is often used in the sealing ring of chemical butterfly valves.

Rubber
Rubbern materials (such as chore rubber, fluorine rubber, etc.) have good sealing performance and chemical corrosion resistance, and are suitable for general chemical media.

Metal seal
Metal sealing rings (such as stainless steel, titanium alloy, etc.) have high corrosion resistance and high temperature resistance, and are suitable for special chemical media and high temperature environments.

Polymer seal ring
In addition to PTFE, there are other polymer materials, such as polyethyleone (PEEK), which can be used for chemical media and high temperature conditions that can be used for special requirements.

The selection of sealing loop materials shall be evaluated according to the specific working conditions, the nature of the medium, and the requirements of the use of use, and follow relevant standards and guidelines. It is best that you can write a letter to inquire about Linde Polymer to obtain the best sealing material recommendations and custom solutions suitable for the best sealing material for chemical butterfly valves.

PTFE sealing rings are very commonly used in chemical butterfly valves. Chemical butterfly valve is a commonly used valve to control fluid flow, and PTFE sealing ring plays an important sealing role in it.

In chemical butterfly valves, PTFE sealing rings are usually used in the following aspects

Stem seal
PTFE sealing ring can be used to seal between the valve stem and the valve body to prevent medium leakage. Because PTFE has excellent corrosion resistance and low friction coefficient, it can provide reliable sealing performance and ensure smooth movement of the valve stem.

Seat seal
PTFE sealing rings are also commonly used for valve seat sealing in butterfly valves, located in the sealing cavity between the valve body and valve disc. The PTFE sealing ring can provide good sealing effect, prevent media leakage, and resist corrosion by chemical media.

leak control
In some applications where strict leakage control is required, PTFE sealing rings are used for leakage control in butterfly valves. They provide a reliable seal when the valve is closed, ensuring that media does not leak into the environment around the valve.

temperature adaptability
PTFE sealing ring has good temperature adaptability and can maintain its sealing performance at different temperatures. This makes them suitable for various working conditions in chemical butterfly valves, including high and low temperature environments.

In general, PTFE sealing rings play a key sealing role in chemical butterfly valves and can provide reliable sealing performance, corrosion resistance and temperature adaptability. They are widely used in various chemical processes to ensure the normal operation of butterfly valves and the safe control of media.

PTFE (polytetrafluoroethylene) sealing ring is a common sealing element made of polytetrafluoroethylene material. PTFE is a synthetic material with excellent chemical stability and low coefficient of friction that is used in a wide variety of sealing applications.

Features and benefits of PTFE sealing rings include

Excellent corrosion resistance
PTFE has excellent chemical stability and can resist erosion by a variety of chemicals, including acids, alkalis, solvents and corrosive gases.

low coefficient of friction
PTFE has an extremely low coefficient of friction, providing good sliding performance and energy saving in sealing applications.

wide temperature range
PTFE sealing rings have a wide operating temperature range and can maintain stability and sealing performance in extreme high and low temperature environments.

Good sealing performance
PTFE sealing ring can provide reliable sealing effect, prevent liquid or gas leakage, and effectively prevent the entry of dust and impurities.

Long life and wear resistance
Due to their corrosion resistance and low friction properties, PTFE sealing rings generally have a long service life and are resistant to wear and tear.

PTFE sealing rings are commonly used in a variety of industries and applications, including chemical, oil and gas, food and pharmaceutical, automotive and aerospace. They are widely used in equipment and machinery such as valves, pipelines, pumps, compressors, rotating shafts and pistons to provide reliable sealing performance.

PTFE chemical valve sealing rings usually require the following certifications to ensure that their quality and performance meet standards

ISO 9001
This is a quality management system certification that ensures a manufacturer’s production processes meet international standards and deliver consistent product quality.

ISO 14001
This is an environmental management system certification that ensures manufacturers follow environmental protection standards and reduce environmental impact during the production process.

ISO 45001
This is an occupational health and safety management system certification that ensures manufacturers provide a safe and healthy working environment and protect the rights and interests of employees.

FDA certification
If the PTFE sealing ring will be used in applications that come into contact with food, such as the food processing industry, FDA (U.S. Food and Drug Administration) certification is necessary. This ensures the safety and hygiene of the sealing ring material.

In addition, specific application scenarios may require other specific certifications and standards, such as:

NACE certification
Suitable for sealing rings used in corrosive environments such as the oil and gas industry to ensure their corrosion resistance.
TA-Luft certification
Applicable to the German market, the product is required to meet low leakage requirements to ensure that the sealing ring has a low leakage rate when used.

The requirements for these certifications and standards may vary by region and industry. Specific certification requirements should be determined based on the product’s use environment and target market. Manufacturers usually provide information about certification and compliance in their product documentation or on their official website.