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China Triple Eccentric Metal Seated Butterfly Valve - Reliable Design from Leading Suppliers & Factory

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Introducing our advanced Three Eccentric Butterfly Valve, designed for optimal sealing and flow control. This innovative valve employs a unique structural design that features three eccentric distances, enhancing its functionality. The key to its performance lies in the three eccentric structure: the valve stem axis is strategically offset from both the butterfly plate and the body center, while the rotation axis of the valve seat is angled to the valve body channel. This enables the butterfly plate to create a wedge-shaped space with the valve seat when closed, allowing for effective sealing through friction.

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Our conical sealing surface further enhances performance, as the butterfly plate is crafted with an external inclined conical surface, paired with an internal inclined conical valve seat. This configuration forms an elliptical contact surface, achieving a secure seal when closed. The asymmetric pressing force applied in both vertical directions ensures that sealing tightens under increased pressure, making it a reliable choice for various applications.

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As a leading factory and one of the top suppliers in China, we pride ourselves on delivering high-quality butterfly valves that meet rigorous industry standards. Trust our expertise and innovative designs to meet your flow control needs efficiently.

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    Features & Benefits

    Unique, compact, and lightweight design with flexible and labor-saving operation.

    Provides reliable sealing that meets various standards.

    Offers good flow characteristics and has a regulating function.

    Utilizes an eccentric design to minimize wear on the sealing surface, extending the valve's lifespan.

    Suitable for a wide range of applications, including water, steam, oil, and gas.

    Applicable across various conditions including different temperatures, pressures, and corrosive environments.

    Features a triple eccentric hard-sealed butterfly valve with an integral body and seat, the seat's sealing surface is coated with temperature and corrosion-resistant materials.

    Three eccentricities position the shaft and sealing surfaces to optimize sealing and reduce wear.

    Equipped with multi-layer sealing rings on the valve plate, enhancing sealing performance and operational ease, suitable for both high and low temperatures, ensuring zero leakage.

    Product Description
    Working Mechanism
    Open State:

    The butterfly plate is separated from the valve seat, and the fluid passes through the channel; due to the eccentric design, during the opening process, the butterfly plate gradually detaches from the valve seat, reducing friction and operating torque.

    Closed State:

    The butterfly plate rotates 90° to contact the valve seat, forming a wedge-shaped space and achieving sealing through torque.

    Flow Regulation:

    During the opening rotation of the butterfly plate, the valve's flow area gradually increases, reducing fluid resistance and improving the flow coefficient, achieving flow regulation.

    Technical Advantages
    Sealing Performance:

    The metal-to-metal hard sealing method can still maintain good sealing performance in high-temperature and high-pressure environments.

    Low Friction Operation:

    The eccentric design significantly reduces the operating torque and extends the valve's lifespan.

    Self-Locking Function:

    When closed, the butterfly plate becomes tighter under pressure, preventing the phenomenon of over-positioning.

    This valve is widely used in the petroleum, chemical, and power industries, and common structural connection forms include double flange type, welding type, lug type, and socket type, etc.
    Product Display
    Frequently Asked Questions (FAQ)
    What are the main applications of the triple eccentric butterfly valve?

    It is widely used in the petroleum, chemical, and power industries, and is highly suitable for various applications including water, steam, oil, and gas.

    How does the unique eccentric design benefit the valve's operation?

    The eccentric design minimizes wear on the sealing surface, significantly reduces friction and operating torque during opening and closing, and extends the overall lifespan of the valve.

    Can this valve withstand high temperatures and corrosive environments?

    Yes, it utilizes a metal-to-metal hard sealing method and the seat's sealing surface is coated with temperature and corrosion-resistant materials, making it perfectly applicable across extreme temperatures, high pressures, and corrosive conditions.

    What happens to the valve during the closed state?

    In the closed state, the butterfly plate rotates 90° to contact the valve seat, forming a wedge-shaped space. This achieves a tight seal through torque and features a self-locking function that prevents over-positioning.

    Does the valve offer flow regulation capabilities?

    Yes, during the opening rotation of the butterfly plate, the valve's flow area gradually increases, which reduces fluid resistance and improves the flow coefficient, effectively achieving precise flow regulation.

    What types of structural connections are available for this product?

    Common structural connection forms for this valve include the double flange type, welding type, lug type, and socket type, providing flexibility for different installation requirements.