🌡️Triple-eccentric metal-seated butterfly valve

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Triple Eccentric(Offset) Butterfly Valve

Flanged Butterfly Valve

❓ Is it difficult to ensure sealing under high-temperature conditions? ❓ Are you concerned about seal-face wear due to frequent opening and closing? ❓ How can you balance sealing performance with operational reliability under high-pressure conditions?

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🔥 Triple-Eccentric Metal-Sealed Butterfly Valve

The triple-eccentric metal hard-sealed butterfly valve employs a unique… Three-eccentric structural design By optimizing the relative positioning of the valve stem axis, the sealing centerline, and the conical sealing surface, the butterfly disc achieves nearly frictionless separation and contact with the valve seat during opening and closing.

💡 Unlike conventional mid‑line butterfly valves and double‑eccentric soft‑seated butterfly valves, triple‑eccentric butterfly valves feature a metal hard‑seal design, making them particularly well suited for service conditions that demand superior sealing performance, high temperature resistance, excellent wear resistance, and extended service life.

⚙️ Triple-eccentric structure

The triple-eccentric design ensures that the butterfly disc gradually disengages from the sealing surfaces at the onset of opening, thereby reducing friction and compressive stress on the sealing surfaces during operation and helping to lower both the operating torque and wear on the sealing surfaces.

🔩 Metal hard seal

It employs a metal valve seat and a metal sealing structure, making it suitable for industrial service conditions involving high temperatures, high pressures, and stringent requirements for sealing reliability.

🛠️ Reduced wear during opening and closing

The triple-eccentric design reduces direct friction between the butterfly disc and the valve seat, enhancing the valve’s wear resistance during frequent opening and closing cycles.

🌡️ Adaptable to more demanding operating conditions

Compared with conventional soft-sealed butterfly valves, metal hard-sealed designs exhibit superior performance under high-temperature conditions and in certain complex industrial media. The specific operating temperature and media compatibility should be verified based on the actual sealing materials and structural configuration.

💪 Suitable for large-diameter pipes

It can be used in large-diameter industrial pipelines and water systems, and can also be customized according to pressure, temperature, fluid type, connection standards, and actuation method.

🏭 Typical Applications

🔥 High-Temperature Process Piping
🏭 Industrial process pipelines
⚡ Power and Energy Systems
🛢️ Oil, Natural Gas, and Petrochemical Industries
⚙️ High-Temperature, High-Pressure Industrial Systems
💧 Water systems and industrial water systems that require hard sealing

📋 Common Configurations

Nominal diameter: Can be configured according to project requirements.
Pressure rating: PN10, PN16, PN25, and higher pressure classes
Sealing type: Metal hard seal
Connection method: Flange connections, etc.
Operating method: Manual, worm gear, electric, pneumatic
Valve body and valve disc material: Can be selected according to the medium and operating conditions.
Sealing material: Configure according to temperature and medium requirements.

🔍 What operating conditions are three‑eccentric butterfly valves suitable for?

Seeing the term “butterfly valve” does not necessarily mean you should opt for a triple-eccentric design.

If the project belongs to:

Room-temperature water + standard shut-off + soft-seal requirements

Double-eccentric soft-seated butterfly valves are generally more cost-effective.

And when the project places greater emphasis on:

High temperature, elevated pressure, metal sealing, wear resistance, complex industrial media

In that case, a triple-eccentric metal‑sealed butterfly valve may be considered.

This content is highly valuable to your customers, as it directly addresses the most common questions asked by procurement professionals:

“Why should I choose triple eccentricity instead of a standard centerline or double eccentricity?”

🏭 38 years of valve manufacturing experience

Zhongnan Valves was founded in 1988 and has long been dedicated to the research, development, and manufacturing of eccentric valves and water‑system valves, capable of… Medium, pressure, temperature, nominal diameter, sealing type, and actuation method Provide the corresponding valve configuration.