⑬ Series bidirectional double-eccentric double-flanged soft-seal butterfly valve

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Double Eccentric(Offset) Butterfly Valve

Butterfly Valve

Flanged Butterfly Valve

❓ With bidirectional water pressure fluctuations in pipelines, is the seal still reliable? ❓ For large-diameter valves subjected to frequent opening and closing, how can sealing wear be minimized? ❓ When selecting valves for water‑treatment projects, how can both bidirectional sealing performance and operational stability be ensured?

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The 13-series double‑eccentric butterfly valve is a classic, workhorse valve for municipal water supply and drainage, urban pipeline network upgrades, and water‑plant support projects ✅. Featuring an optimized double‑eccentric design, it effectively addresses common issues with centerline butterfly valves—such as rapid wear, high torque requirements, and unstable sealing. With advantages including effortless operation, reliable sealing, excellent cost‑effectiveness, and exceptional durability, it is widely used in residential water supply, municipal water systems, and industrial clean‑water piping networks, making it the standard, go‑to butterfly valve for small and medium‑sized water‑utility projects both domestically and internationally.

🔹 Double-eccentric optimized structure ensures smooth operation with no scraping, enhancing durability.

Leveraging a mature double‑eccentric offset design, the valve disc rapidly disengages from the seat at the moment of opening, ensuring frictionless, scratch‑free operation throughout the entire cycle and significantly reducing wear on the sealing elements. Compared with conventional centerline butterfly valves, this design offers a longer service life, reduced risk of jamming and leakage, and superior long‑term operational stability, making it well suited for applications involving frequent, high‑cycle opening and closing.

🔹 Light‑torque opening and closing, making installation and operation hassle‑free.

The Series 13 features a lightweight design and low actuation torque, compatible with manual, worm‑gear, electric, and pneumatic actuators. It offers effortless operation and smooth, stall‑free performance. Installation is unrestricted by orientation, on‑site commissioning is straightforward, and it suits the vast majority of municipal water supply and drainage pipeline installation applications.

🔹 Available with either soft or hard sealing, offering broad compatibility with various operating conditions.

It supports two sealing configurations: soft‑seal EPDM/NBR and hard‑seal metal. The soft seal delivers bidirectional zero leakage, making it ideal for potable water and domestic water supply; the hard seal offers superior temperature and pressure resistance as well as tolerance to minor impurities, suitable for general wastewater and industrial water‑transfer applications, thereby meeting diverse project requirements for sealing performance and durability.

🔹 National-standard precision craftsmanship, compliant with municipal acceptance criteria.

The valve body is made of high‑strength ductile cast iron, offering excellent toughness, pressure resistance, and corrosion resistance. Its compact design results in low flow resistance and high water‑delivery efficiency. Manufactured in strict compliance with water‑utility pipeline standards and subjected to rigorous pressure testing, it meets stringent requirements for sealing and pressure resistance, fully satisfying the acceptance criteria for municipal projects, residential developments, and water‑plant renovation works.

🔹 Ample stock and cost-effective project pricing

The 13 Series is a standardized, general‑purpose product line offering a full range of specifications, mature mass‑production capabilities, and rapid delivery. It covers standard nominal diameters from DN50 to DN2000 and supports the mainstream pressure classes of PN10 and PN16. With no need for complex customizations, it delivers short lead times and moderate costs, making it ideally suited for large‑scale municipal water supply projects, canal‑based water conveyance, and industrial park pipeline networks 🌍.

🔹 38 years of factory‑scale mass production ensures reliable delivery and stable project implementation.

Manufactured on standardized assembly lines at the source, with consistent quality control and a low failure rate, we have long-term experience handling large‑scale municipal water supply and drainage projects both domestically and internationally. We provide a complete set of certifications, test reports, and product selection documents, support bulk inquiries and project‑specific customization, and ensure rapid delivery with worry‑free after‑sales service 💪.

📩 Free selection guidance | Get an engineering quotation for the 13-series double-eccentric butterfly valves

For guidance on selecting the appropriate size, pressure rating, and actuation type, as well as for bulk‑project pricing, please feel free to contact us. We’ll provide a one‑on‑one consultation to recommend the optimal water‑pipeline valve solution tailored to your needs.

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Double eccentric butterfly valve manufacturer

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⑮ Series Bi-directional Double-Eccentric Double-Flanged Soft-Sealed Butterfly Valve

✨Pneumatic Eccentric Butterfly Valve

⑮ Series Bi-directional Double-Eccentric Double-Flanged Soft-Sealed Butterfly Valve

✨Pneumatic Eccentric Butterfly Valve

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