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Home > Hot Products > Wholesale China Suppliers Factory Double Eccentric Butterfly Valve PN16 Soft Sealing D342X DN200-DN3000 Supplier, Manufacturer
Wholesale China Suppliers Factory Double Eccentric Butterfly Valve PN16 Soft Sealing D342X DN200-DN3000 Supplier, Manufacturer
Wholesale China Suppliers Factory Double Eccentric Butterfly Valve PN16 Soft Sealing D342X DN200-DN3000 Supplier, Manufacturer
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Wholesale China Suppliers Factory Double Eccentric Butterfly Valve PN16 Soft Sealing D342X DN200-DN3000 Supplier, Manufacturer
Wholesale China Suppliers Factory Double Eccentric Butterfly Valve PN16 Soft Sealing D342X DN200-DN3000 Supplier, Manufacturer

Wholesale China Suppliers Factory Double Eccentric Butterfly Valve PN16 Soft Sealing D342X DN200-DN3000 Supplier, Manufacturer

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Type: Double Eccentric Butterfly Valve

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Series: D342X

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Size: DN200-DN3000/4–120

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Pressure Rating: PN6/PN10/PN16/5K/10K/150LB

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Design Standard: EN 593

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Service: OEM & ODM

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Our double eccentric butterfly valve, designed to minimize contact between the disc and seat, ensures optimal performance by allowing the disc to separate from the seat at the beginning of the opening motion. This innovative feature leads to enhanced efficiency when fully open. As a leading valve manufacturer in China, we pride ourselves on supplying high-quality products tailored to your needs. Trust our factory to deliver exceptional double eccentric butterfly valves that meet stringent industry standards.

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Product Description

Technical Specifications
Valve Type Eccentric butterfly valve Structure Double Eccentric
Standard EN593 Workmanship Investment casting
Sealing Direction Bidirectional Sealing Grade Zero leakage
Temperature -20°C < T < 120°C Operation Handle/Lever
Key Characteristics
Featuring a double-eccentric structural design, the eccentric butterfly valve integrates shut-off, connection, and flow regulation functionalities. Its sealing surface is fabricated with stainless steel welding technology and paired with a dual-seal ring configuration, which effectively resolves shaft hole leakage issues and enhances corrosion resistance. Through flow field simulation and stress measurement, the product meets or exceeds performance requirements for diverse industrial sectors.
Eccentric butterfly valve details
Product Advantages
  • 1 High Pressure Resistance: Better stability and longer service life compared to midline butterfly valves, specifically designed for high-pressure environments.
  • 2 Large Flow Rate & Low Wear: Reduced friction between the disc and seat lowers component wear, extending service life by 30–50% compared to concentric models.
  • 3 Cost-Effective Solutions: Compact structure and lighter weight compared to gate valves, reducing manufacturing, installation, and actuator costs.
  • 4 Superior Sealing: The built-in sealing structure combined with the valve seat effectively prevents air and water leakage.
  • 5 Simple Maintenance: Minimal moving parts allow for easy disassembly, inspection, and replacement of wearing parts.
Butterfly valve structure
Application Scenarios
These valves excel in low-to-medium pressure applications (PN1.0–PN1.6MPa), handling room-temperature clean water, cooling water, and circulating water systems. They are widely deployed in municipal water supply, building piping networks, and fire protection systems.
Application 1
Application 2
Application 3
Packing & Delivery
Standard export wooden case packaging ensures the safety and integrity of the valves during international transit.
Valve Packing
Frequently Asked Questions
What is a double eccentric butterfly valve and how does it differ from a concentric one?
A double eccentric valve features two offset axes, allowing the disc to lift away from the seat upon opening. This eliminates continuous friction, leading to lower wear and better sealing than concentric valves where the disc stays in constant contact with the seat.
What pressure and temperature ranges are suitable for this valve?
It is designed for low-to-medium pressure (PN1.0 to PN1.6 MPa) and operates reliably within a temperature range of -20°C to 120°C, suitable for water and general industrial fluid systems.
What industries is this valve most suitable for?
It is ideal for municipal water supply, drainage, fire protection, HVAC cooling circuits, and industrial pipelines in power plants or chemical facilities, especially for large-diameter requirements.
How is the sealing performance achieved and what is the leakage standard?
The valve achieves zero leakage through its eccentric disc structure and a dual-seal ring. The sealing surface uses stainless steel welding to prevent shaft hole leakage and resist corrosion.
What are the maintenance requirements?
Due to fewer moving parts, maintenance is simple. Seats and packing can be easily inspected or replaced without specialized tools, ensuring minimal downtime.
What manufacturing standards does this valve comply with?
The valve complies with the EN593 standard and is manufactured using investment casting for dimensional accuracy and superior finish. Performance is verified via flow field simulation.

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