Design and Applications of Eccentric Half Ball Valve
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The Eccentric Half Ball Valve is an innovative valve product that integrates advanced domestic and international technologies, occupying a crucial position in the industrial sector due to the design principles and broad application scope of this special ball valve. This article provides a detailed exploration of its structural features, applicable environments, and specific industrial applications.

Structural Features

The core structure of the Eccentric Half Ball Valve includes an eccentric sphere and a metallic ball crown. Valve operation, enabling both opening and closing, is achieved through a 90-degree rotation of the eccentric crankshaft. The metallic ball crown's contact with the seat sealing surface allows for axial and radial floatation, effectively compensating for any misalignment between the crown and the seat.

In the open position, the sphere is concealed within the valve cavity, minimizing flow resistance and reducing susceptibility to medium erosion. When closing, the ball crown progressively shears along the seat, effectively removing deposits and ensuring reliable sealing performance.

Additionally, the design of the seat and ball crown considers post-wear compensation, ensuring long-term sealing reliability and extending the valve's operational lifespan. The valve's structural design allows for online inspection and maintenance after depressurization, requiring only the opening of the valve cover and removal of the ball crown and support body, thus significantly enhancing maintenance efficiency and safety.

Application Environments

The Eccentric Half Ball Valve is categorized and optimally designed according to various industrial requirements and medium characteristics.


1. General-purpose Valve

Suitable for demanding applications such as sewage treatment, pulp processing, and urban heating systems, providing stable and reliable control of medium flow and pressure.


2. Petrochemical-specific Valve

Corrosion-resistant and capable of withstanding high temperatures, suitable for controlling various oil products and chemicals, with temperatures up to 425°C.

3. Gas-specific Valve

Designed for the transport control of coal gas, natural gas, and liquefied gas, offering tight sealing and corrosion resistance to ensure safe and stable system operation.

4. Slurry-specific Valve

Used in industrial pipeline transport of liquid-solid phase mixing or chemical reactions with crystal precipitation or scaling. Material selection and sealing design accommodate medium characteristics and temperature requirements, ensuring long-term reliable operation.

5. Coal powder ash-specific Valve

Primarily used in power plants and alumina production processes, requiring wear resistance and reliable sealing performance to withstand high-speed flow media and particle erosion.


Specific Applications

The Eccentric Half Ball Valve finds extensive applications in multiple industries such as petroleum, chemical, power generation, and metallurgy:

In the petroleum industry, it controls and regulates fluid flows during crude oil refining processes, ensuring stable system operations.

In the chemical industry, it facilitates the transport and control of various chemicals and liquid mediums, boasting corrosion resistance and high-temperature durability.

In the power generation sector, it is employed in boilers and slagging systems for medium control, ensuring the safety and stability of power plant operations.

The Eccentric Half Ball Valve plays an indispensable role in modern industrial pipeline systems, thanks to its advanced structural design and multifunctional capabilities. Continual optimization and innovation have enabled it to meet diverse industrial demands, significantly enhancing industrial production efficiency and safety.
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