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Eccentric Butterfly Valve PN16 Soft Sealing - China Suppliers and Factory OEM ODM Solutions
| Valve Type: | Eccentric butterfly valve | Structure: | Eccentric |
| Standard: | EN593 | Workmanship: | Investment casting |
| Sealing direction: | Bidirectional | Sealing grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Handle/Lever |
Characteristics
Featuring a double-eccentric structural design, the eccentric butterfly valve integrates shut-off, connection, and flow regulation functionalities, making it well-suited for meeting the versatile requirements of pipeline systems in urban water supply and drainage, building fire protection, metallurgical hydropower, and other industrial sectors. Its sealing surface is fabricated with stainless steel welding technology and paired with a dual-seal ring configuration, which not only resolves shaft hole leakage issues effectively but also enhances corrosion resistance. By leveraging flow field simulation and stress measurement technologies, the product’s performance metrics meet or exceed national standard requirements.
Advantages
1
High pressure resistance and long service life: Compared to midline butterfly valves, double eccentric butterfly valves are more resistant to high pressure, have good stability, and have a longer service life.
2
Large flow rate: Reduced friction between the disc and seat significantly lowers component wear, extending the valve’s service life by 30-50% compared to concentric butterfly valves. The simplified structure (fewer moving parts) facilitates easy disassembly, inspection, and replacement of wearing parts (seats, packing), minimizing downtime and maintenance costs.
3
Cost-Effective Large-Diameter Solutions: Compared to gate valves or globe valves of the same diameter, double eccentric butterfly valves offer a more compact structure, lighter weight, and lower manufacturing/installation costs. They require less space for piping layout and simpler actuator configurations (air, electric, hydraulic), reducing overall project investment—ideal for large-scale infrastructure (municipal water supply, power plants, chemical pipelines).
4
Good sealing performance: The eccentric structure of the butterfly plate is combined with the valve seat to form a built-in sealing structure, which can effectively avoid air leakage, water leakage and other situations.
5
Simple structure: composed of a small number of components, easy to maintain and repair.
Packing
Standard export wooden case packaging
Application Scenarios
The double eccentric butterfly valves has broad range of low-to-medium pressure applications (PN1.0–PN1.6MPa), double eccentric butterfly valves excel in handling room-temperature clean water, cooling water, and circulating water systems. They are also widely deployed in municipal water supply infrastructure, building piping networks, and fire protection systems, delivering reliable performance across diverse commercial and industrial scenarios.
Frequently Asked Questions
Q: What is a double eccentric butterfly valve?
A double eccentric butterfly valve is a high-performance valve designed with an offset shaft and disc configuration. This design integrates shut-off, connection, and flow regulation functionalities, making it ideal for urban water supply, building fire protection, and industrial systems.
Q: How does the double eccentric design improve service life?
The double eccentric structure significantly reduces friction between the disc and the seat during operation. This minimizes wear and tear, extending the valve's service life by 30-50% compared to traditional concentric butterfly valves.
Q: What standards and workmanship are applied to these valves?
These eccentric butterfly valves are manufactured in accordance with the EN593 standard and utilize high-quality investment casting workmanship to ensure superior dimensional accuracy and material integrity.
Q: What are the typical pressure and temperature ratings?
The valves are highly suitable for low-to-medium pressure applications ranging from PN1.0 to PN1.6 MPa. They operate reliably within a temperature range of -20°C < T < 120°C.
Q: How is the zero-leakage performance achieved?
Zero-leakage is achieved through a bidirectional sealing design combined with an eccentric structure. The sealing surface is constructed using stainless steel welding technology and paired with a dual-seal ring configuration, preventing shaft hole leakage.
Q: What packaging method is used for shipping?
All valves are packed using standard export wooden cases. This robust packaging ensures the products are fully protected from damage and environmental factors during international transit.