
The structural principles of high-performance butterfly valves mainly include COS curve sealing structure, spherical processed valve disc, and separated sealing design.
The COS curve sealing structure principle is reduce the friction between the valve disc and the valve seat, lower the torque of the actuator, and extend the life of the seat ring. The valve plate and seat ring are in contact simultaneously on a 360 degree circumference, reducing friction and torque.
The pherical processed valve disc principle is the sealing surface is spherical, ensuring smooth contact during sealing, reducing friction, and improving sealing performance.
Separated sealing design principle is improve sealing performance, prevent gas penetration, and have strong corrosion resistance.
In summary, high-performance butterfly valves achieve the goals of low friction, long service life, and high sealing performance through the above structure and principle, and are suitable for various industrial fields.

1. Oil and gas industry
● Used for the extraction, transportation, and processing of crude oil and natural gas, controlling the flow of high-pressure and high flow rate media, such as oil and gas pipeline trunks and refinery process pipelines.
● Typical scenarios include wellhead equipment, long-distance pipeline pressure regulating stations, and refinery fractionation tower systems.
2. Chemical and petrochemical industry
●Suitable for transporting corrosive media such as acidic and alkaline solutions, organic solvents, etc., such as synthetic ammonia plants, fine chemical reaction vessels, and PVC production lines.
●The temperature resistance and fatigue resistance requirements for valves are extremely high, and they need to meet durability tests for millions of cycles of operation
3. Power industry
● Water and steam systems for thermal power, nuclear power, and new energy power plants, such as boiler feedwater pipelines and turbine cooling water circuits.
● In high-temperature and high-pressure environments, it is necessary to ensure the sealing and structural stability of valves, such as steam isolation valves for supercritical units
4. Metallurgical and paper-making industries
● The blast furnace gas pipeline, steel rolling cooling water system, and pulp conveying pipeline of the steel plant.
● Must withstand high temperature dust and highly corrosive media, such as chlorine gas pipelines in pulp bleaching processes.
5. Water treatment and environmental protection industry
● In municipal water supply and drainage, sewage treatment plants, and industrial wastewater treatment systems, it is used to regulate flow and cut off media, such as sedimentation tank outlet valves and sludge treatment pipelines.
● Some scenarios require explosion-proof and leak proof functions to adapt to harsh working conditions.

With the upgrading of industrial automation and the increasing demand for environmental protection, the demand for high-performance butterfly valves is rapidly growing in emerging fields such as shale gas extraction (high-pressure sulfur-containing environment), LNG transportation (low-temperature sealing), and carbon capture systems (CO ₂ corrosion protection).
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