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◉ Triple-eccentric hard-sealed flanged expansion-type butterfly valve
Categories：
Expansion Butterfly Valve
Double Eccentric(Offset) Butterfly Valve
Flanged Butterfly Valve
🔧 Triple-eccentric hard-sealed flanged telescopic butterfly valve
38 years of valve manufacturing experience | Specializing in water treatment and large-diameter valves | Offering project‑specific customization
Triple-eccentric hard-sealed flanged expansion-type butterfly valve, will Three‑eccentric butterfly valve structure, metal hard‑seal design, and flange expansion‑compensation structure It is suitable for industrial piping systems that demand high sealing performance, temperature resistance, and reliable installation and operation.
The triple-eccentric design enables the valve disc to move with virtually no friction relative to the seat during opening and closing, thereby reducing wear on the sealing surfaces. The metal hard-seal configuration is well suited for high-temperature, high-pressure, and complex industrial service conditions.
The flanged expansion joint can compensate for pipeline installation errors and axial displacement within a certain range, facilitating valve installation, removal, and subsequent maintenance.
⚙️ Core Product Features
✓ Triple-eccentric structure
The valve stem axis, the valve disc center, and the sealing conical surface are arranged in a triple‑eccentric configuration, enabling the valve disc to quickly disengage from the sealing surface upon opening. This design reduces friction and wear during operation and enhances the valve’s long‑term operational stability.
✓ Metal hard seal
It employs a metal-sealed design, offering excellent resistance to high temperatures, wear, and media erosion, making it suitable for industrial piping systems with stringent sealing‑reliability requirements.
✓ Flanged connection
It employs a flanged connection, offering convenient installation and suitability for standard flanged piping systems, while also facilitating subsequent maintenance and replacement.
✓ Expansion joint structure
Expansion joints can compensate for axial pipe displacement and installation misalignments within a specified range, while also facilitating valve removal and installation, thereby simplifying the installation and maintenance of large-scale piping systems.
✓ Bidirectional sealing available as an option.
In accordance with the project requirements, sealing configuration solutions suitable for various fluid flow directions and pressure conditions can be provided.
✓ Suitable for large-diameter pipelines
Suitable for large-scale water supply, wastewater treatment, industrial circulating water, and energy pipeline systems, it can be designed and configured with large diameters to meet project requirements.
💧 Applicable Operating Conditions
The triple-eccentric hard-sealed flanged expansion-type butterfly valve is suitable for:
Water Treatment | Wastewater Treatment | Water Supply Engineering | Industrial Circulating Water | Seawater Systems | Energy | Chemical Industry | Large-Scale Industrial Piping
Especially suitable for situations that require balancing:
High‑reliability sealing + wear resistance + pipeline compensation + easy maintenance
of the engineering project.
For service conditions involving high temperatures, media with a certain degree of corrosivity, or stringent requirements for the long-term operational reliability of valves, selection should be based on the specific characteristics of the process medium, operating temperature and pressure, and material‑compatibility criteria.
🔩 Main Structure and Configuration
Structural form: Triple-eccentric butterfly valve
Sealing type: Metal hard seal
Connection method: Flanged connection
Telescopic form: Flanged telescopic type
Drive type: Manual / Worm gear / Electric / Pneumatic
Valve body material: Ductile iron / Carbon steel / Stainless steel, etc.
Valve disc material: Select according to the medium and operating conditions.
Valve stem material: Configured according to pressure, medium, and corrosion‑resistance requirements.
Sealing material: Metal sealing; materials can be selected according to operating conditions.
Pressure rating: PN10 / PN16 / PN25 / Class, etc., can be configured according to project requirements.
Specific dimensions, materials, pressure ratings, and actuator configurations shall be subject to the project’s technical requirements.
🏭 38 years of valve manufacturing experience
Since 1988 Dedicated to valve manufacturing.
We have long been focused on Water Treatment and Industrial Pipeline Valves , key products include:
Eccentric Butterfly Valve | Triple-Eccentric Butterfly Valve | Double-Eccentric Butterfly Valve | Large-Diameter Butterfly Valve | Hard-Sealed Butterfly Valve | Seawater Butterfly Valve | Flow and Pressure Regulating Valve | Rotary Ball Valve
For large-scale water treatment and industrial pipeline projects, product configurations can be customized based on the customer’s technical specifications, valve data sheets, and site operating conditions.
We focus on verifying:
• Pipe diameter DN
• Pressure rating PN / Class
• Media Type
• Operating temperature
• Work stress
• Sealing Grade
• Installation Direction
• Flange Standards
• Expansion/contraction requirements
• Drive Type
• Material and Corrosion-Resistance Requirements
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