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Hard-seated Triple Eccentric Flanged Butterfly Valve

  • Size Range: Typically from DN40 (1.5 inches) to DN1200 (48 inches), special sizes can be customized upon request.
  • Pressure Rating: PN10/16/25/40, ANSI Class 150/300/600, etc., depending on the material and design.
  • Connection Type: Flanged, ensuring a stable connection with the pipeline.
  • Operating Temperature: -196°C to +650°C, varying according to the sealing material and valve body material.
  • Valve Body Material: Commonly carbon steel, stainless steel, alloy steel, etc., chosen based on the corrosiveness of the medium.
  • Sealing Material: Metal sealing (such as stainless steel, tungsten carbide) or other high-temperature and corrosion-resistant hard materials.
  • Operation Mode: Manual, electric, pneumatic, hydraulic, etc., selected based on usage requirements.

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Product Description:

The hard-seated triple eccentric flanged butterfly valve is a high-performance valve that employs a triple eccentric design, meaning the valve stem axis, the valve seat centerline, and the sealing surface centerline each have their own eccentricities. This design reduces friction between the valve disc and the sealing surface during opening and closing, thereby extending the valve’s service life and ensuring better sealing performance, especially under high-temperature and high-pressure working conditions.

Product Overview:

The hard-seated triple eccentric flanged butterfly valve achieves near-zero leakage sealing through its unique triple eccentric structure (two eccentricities of the valve stem and one eccentricity of the valve seat). The “hard-to-hard” refers to the use of hard materials such as stainless steel, tungsten carbide, or special alloys for both the valve seat and valve disc sealing surfaces, ensuring durability and sealing performance under extreme conditions.

Technical Parameters:

  • Size Range: Typically from DN40 (1.5 inches) to DN1200 (48 inches), special sizes can be customized upon request.
  • Pressure Rating: PN10/16/25/40, ANSI Class 150/300/600, etc., depending on the material and design.
  • Connection Type: Flanged, ensuring a stable connection with the pipeline.
  • Operating Temperature: -196°C to +650°C, varying according to the sealing material and valve body material.
  • Valve Body Material: Commonly carbon steel, stainless steel, alloy steel, etc., chosen based on the corrosiveness of the medium.
  • Sealing Material: Metal sealing (such as stainless steel, tungsten carbide) or other high-temperature and corrosion-resistant hard materials.
  • Operation Mode: Manual, electric, pneumatic, hydraulic, etc., selected based on usage requirements.

Product Features:

  • Triple Eccentric Structure: The triple eccentric design of the valve stem and valve seat achieves zero friction during valve opening and closing, reducing operating torque and improving sealing reliability.
  • Hard Sealing Material: The sealing surface typically uses metal-to-metal hard sealing, such as stainless steel, alloy materials, or other high-temperature and wear-resistant materials, suitable for high-temperature, high-pressure, and corrosive media.
  • Durability: Due to the reduced friction on the sealing surface, the valve’s durability and reliability are greatly improved, especially suitable for frequently operated applications.
  • Easy Maintenance: The simple structure facilitates maintenance, suitable for various industrial environments, especially those requiring long-term reliable operation.
  • Multiple Drive Modes: Available with manual, electric, pneumatic, or hydraulic drive units to meet different operation requirements.

Application Areas:

The hard-seated triple eccentric flanged butterfly valve is widely used in industries such as petroleum, chemical, power, metallurgy, heating, gas supply, and water treatment. It is particularly suitable as critical equipment for cutting off and regulating pipelines carrying high-temperature, high-pressure, or solid particle-containing media.

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TIANYU Valve, with its experienced specialists, specializes in manufacturing industrial valves and provides technical support and one-stop solutions for the global market.

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